Multitasking bug! Hmmm - Galaxy Note 4 Q&A, Help & Troubleshooting

Hey Folks,
I have noticed an occasional bug during multitasking situations that renders the Note 4 extremely slow and laggy.
In order to achieve this, you should try to run a full screen game. In my case, I played Beach Buggy Racing.
Then, you need an incoming background process such as an new email or text message - I noticed that this may trigger a disproportionate power usage bug and cause the on-screen app to run extremely slow. Upon using the "Close all apps" function the lag will be cleared and you may resume your previous app.
I have also noticed this in regular app usage, where the phone would spontaneously explode into a fiery ball of fire. Minus the fire.
Anyone know why this might be happening?

Does it only happen with Beach Buggy Racing? I often multitask with games and haven't noticed this bug.
Sent from my SM-N910U

Happens with other apps as well. For example, while browsing 'reddit sync' the phone occasionally freezes up and starts acting like a Moto Razr with extreme lag.
Closing all apps seems to fix this!

Perhaps the processor is throttling due to the heat.
Sent from my SM-N910P

I noticed after playing Candy Crush my phone would get really slow as in the framerate would slow big time. I realized that I had unchecked Force GPU rendering in developer options. I went and checked it again and haven't had the problem since

I was streaming a movie using allshare application onto my tv via chromecast, at the same time I was watching streaming football on my device via another application as well as browsing xda on tapatalk via split window. No apparent lag and device does not get hot. SM910C here.
Sent from my SM-N910C using Tapatalk

Related

Nexus 7 music stutter

When I play music on my nexus 7 while multi-tasking, the music stutters. Spurts
Thid problem is unbearable when I use the neutron music app.
It happens not as much on the play music app, but still happens.
The system as a whole also lags considerably when running music with the neutron music app.
I'm running 4.2
Anyone had this problem?
hahyun6 said:
When I play music on my nexus 7 while multi-tasking, the music stutters. Spurts
Thid problem is unbearable when I use the neutron music app.
It happens not as much on the play music app, but still happens.
The system as a whole also lags considerably when running music with the neutron music app.
I'm running 4.2
Anyone had this problem?
Click to expand...
Click to collapse
Using bluethooth?
Sent from my GT-I9300 using Tapatalk 2
I hae. Not often, but it happens. I'm not using neutron though. Just any music app.
Sent from my Nexus 7 using Tapatalk 2
hahyun6 said:
When I play music on my nexus 7 while multi-tasking, the music stutters. Spurts
Thid problem is unbearable when I use the neutron music app.
It happens not as much on the play music app, but still happens.
The system as a whole also lags considerably when running music with the neutron music app.
I'm running 4.2
Anyone had this problem?
Click to expand...
Click to collapse
I'm getting the same here... Even with music held locally I.e. not being streamed over WiFi? Another 4.2 issue me thinks...
Sent from my Nexus 7 using xda app-developers app
reidar.ostrem said:
Using bluethooth?
Sent from my GT-I9300 using Tapatalk 2
Click to expand...
Click to collapse
Not using bluetooth
No not via Bluetooth, head phones or speakers only, I don't use BT
Sent from my Nexus 7 using xda app-developers app
for me via YouTube if I hit home yes it will make a split tech screetch
Sent from my Nexus 7 using Xparent Blue Tapatalk 2
I get stutter when streaming music from Google Play and then accessing the network. It doesn't happen on my Nexus 4 phone.
Sent from my Nexus 7 using xda premium
I've noticed the same thing with the 4.2 upgrade. Wasn't happening before.
When using google play music it happens alot. Havent tried other music apps yet
Sent from my Nexus 7 using Tapatalk 2
Anybody knows how to fix it?
Same problem with power amp (pa. 4.2).
Got a nexus 7 that shipped with 4.2 and had the same issue (music suddenly stuttering even without doing anything).
For now I seem to have gooten rid of the issue by doing a "wipe cache partition" in the recovery console (google for it).
The only thing which is left: if some heavy fullscreen animation is playing (i.e. returning to home screen or opening an app) the music _sometimes_ gets a little distorted (< 1 sec) but at least isn't interrupted.
M4he said:
Got a nexus 7 that shipped with 4.2 and had the same issue (music suddenly stuttering even without doing anything).
For now I seem to have gooten rid of the issue by doing a "wipe cache partition" in the recovery console (google for it).
The only thing which is left: if some heavy fullscreen animation is playing (i.e. returning to home screen or opening an app) the music _sometimes_ gets a little distorted (< 1 sec) but at least isn't interrupted.
Click to expand...
Click to collapse
Thanks a lot, that actually works (wipe cache and dalvik in recovery)
Btw it works with bluetooth headphones
It happened to me once or twice so I installed AVG Antivirus and GO Taskmanager then kept cleaning RAM regularly then the glitch got fixed somehow.
Here we go again...
This is driving me nuts...
Using my Nexus 7 the past few days, the music lags/distortions slowly reappeared.
I tried to pay attention when they happen. So far I noticed most of them while:
Opening a new tab in Chrome, switching between apps (fullscreen animation), having heavy disk I/O (i.e. installing/uninstalling apps). But sometimes they just appear out of nowhere, even when not doing anything at all, though.
Here's a collection of things I tried so far to eliminate the issue:
- Cache partition wipe: like mentioned helped at first but soon the issue reappeared.
I also wiped the cache partition again yesterday and the issue actually got worse afterwards this time...
- Keeping RAM clean: tried numerous apps to close unnecessary background apps and free RAM. Seems to reduce the issue a bit.
- Turning off 'click' sounds: in the sound menu there's a toggle for sounds when touching the screen (i.e. clicking on an element within an app). Turning it off actually helped a bit, because the music lags at least won't happen at times when the click sound would be played, anymore. (Which happened often to me before)
- Using Poweramp: this music player app allows you to increase the audio engine's buffer size and process priority. I tried tweaking these settings to no avail. It seemed fine at first but the lags reappeared quickly despite having increased process priority and buffer size. Other third-party players I tried have the same lag issue as well.
I looked around the net and also through the Android bug tracker. Despite of this thread I rarely found any related report so I begin to wonder if other Nexus 7 owners aren't noticing or simply ignoring this issue or if my device is faulty.
I somehow doubt the latter though, because everything else is mostly completely smooth including video playback, Android GUI, scrolling in Chrome etc.
To me it seems more like a multithreading issue (which would be ridiculous having a quad-core processor) or a memory/disk access bottleneck.
I have this issue too, though it's like a 100ms stutter or something quick. I'm using headphones with no issues on desktop or Galaxy Nexus. I've noticed it the most in Netflix and YouTube, but also get it in Google Music and Pandora.
I get it also, even just listening when everything else is idle. It makes me afraid that a device has *more* processing power than my Gnex plays music worse than it. The Gnex is just about flawless with music and multitasking.
Sent from my Nexus 7 using Tapatalk HD
A friend of mine is also having this issue on d2vzw (Verizon Galaxy S III) on cm 10.1 and not 10. I will check back here now and then and see if anyone has come up with anything and any updates on his side.
---------- Post added at 08:36 PM ---------- Previous post was at 07:44 PM ----------
are any of you by chance using a scrobbler?
photogkaram said:
It happened to me once or twice so I installed AVG Antivirus and GO Taskmanager then kept cleaning RAM regularly then the glitch got fixed somehow.
Click to expand...
Click to collapse
Don't use task killers on android:
http://lifehacker.com/5650894/andro...ed-what-they-do-and-why-you-shouldnt-use-them

[Q] Screen Freezes on some Graphically Intensive Games

I have recently experienced an issue that never happened before while playing demanding games. Basically, my a500 will seemingly randomly freeze on an individual frame of the game an the screen will start to flicker on and off. Audio and touch input from the screen still work as I can hear the sound effects made from touching the areas of the screen (gun firing etc.), however the screen refuses to do anything but flicker on the same frame until I force close the app from the task manager (it isn't even detected as unresponsive). This has taken place on NOVA 2 and MC3 as well playstation and n64 emulators. I just upgraded to Civato's flex jb so I'm not sure if its a compatibility issue with a500, but I seem to remember all of these apps working when I first upgraded so I'm not sure what gives now. Any help would be appreciated.
I have exactly the same problem with my a500
Shortbusdriver said:
I have recently experienced an issue that never happened before while playing demanding games. Basically, my a500 will seemingly randomly freeze on an individual frame of the game an the screen will start to flicker on and off. Audio and touch input from the screen still work as I can hear the sound effects made from touching the areas of the screen (gun firing etc.), however the screen refuses to do anything but flicker on the same frame until I force close the app from the task manager (it isn't even detected as unresponsive). This has taken place on NOVA 2 and MC3 as well playstation and n64 emulators. I just upgraded to Civato's flex jb so I'm not sure if its a compatibility issue with a500, but I seem to remember all of these apps working when I first upgraded so I'm not sure what gives now. Any help would be appreciated.
Click to expand...
Click to collapse
I have exactly the same problem with my Acer a500. It's incredible to see that it has passed more than a year and there still isn't a solution for this problem. Many a500 users say that it may be a memory problem. Since then, when I need to run some graphic demanding games or apps, I first stop some applications that are running.
My Gt3 does it on mupen too but only if I load state from slower game speed like 50 %
Sent from my SM-T310 using XDA Premium HD app

Anyone having any Lag & Heat Issues???

Having Lag & Heat Issues???
Is anyone having lag issue or any heat issues? I guess I have one of the problem notes as mine has extreme lag and heat problems. I have cleared all caches and have also factory reset several times. What's weird is that the lag will come and go, but it's there more often than not. Even scrolling in settings has the jitters.
Any ideas anyone. I might be better off going through the miserable process of exchanging through the mail.
Thanks in advance for any help!
You'll have to boot to safe mode to see if the issue persists. Also, make sure power saving mode isn't on (I've left it on before).
Majin101 said:
You'll have to boot to safe mode to see if the issue persists. Also, make sure power saving mode isn't on (I've left it on before).
Click to expand...
Click to collapse
I'm experiencing the same issues - overheating, slowing down, serious lag. It's simply terrible. I exchanged it and the new one is just as bad and maybe even worse.
[email protected] said:
I'm experiencing the same issues - overheating, slowing down, serious lag. It's simply terrible. I exchanged it and the new one is just as bad and maybe even worse.
Click to expand...
Click to collapse
welcome to samsung
I have none of these problems and i am a heavy user
Sent from my SAMSUNG-SM-N930A using XDA-Developers mobile app
My guess is it has to do with one or multiple of the apps you have installed. There is a 3 step process to fix this issue.
#1 - See if any of the apps you have installed are running rouge. Check, battery usage, RAM usage, and Data Usage to see if you have any bad apps. Uninstall any 3rd party apps that you installed that are running too much. They may just still need updated to be optimized for this new device. Also you can use the "sleep" (doze) feature in battery management to restrict apps that are running TOO much in the background. Also on any apps that are using too much data or RAM check the permissions. If an app does not need access to Data, Media etc to work properly turn off those permissions.
#2 Debloat the device. I like "Package Disabler Pro". Basically if it has Facebook, FB, or ATT in the name you should disable it. Also you can go through an disable any Samsung software you do not use as well. I would be careful about using the "disable all bloatware" button because it is not setup correctly for this new device yet.
#3 Give it some time. It you have a TON of media on a micro EXSD card then it can take a new phone a long time to index and create thumbnails for all of that information. It should speed up i about a day or so once it finishes indexing. this will also effect your battery life till it is completed.
ShrekOpher said:
My guess is it has to do with one or multiple of the apps you have installed. There is a 3 step process to fix this issue.
#1 - See if any of the apps you have installed are running rouge. Check, battery usage, RAM usage, and Data Usage to see if you have any bad apps. Uninstall any 3rd party apps that you installed that are running too much. They may just still need updated to be optimized for this new device. Also you can use the "sleep" (doze) feature in battery management to restrict apps that are running TOO much in the background. Also on any apps that are using too much data or RAM check the permissions. If an app does not need access to Data, Media etc to work properly turn off those permissions.
#2 Debloat the device. I like "Package Disabler Pro". Basically if it has Facebook, FB, or ATT in the name you should disable it. Also you can go through an disable any Samsung software you do not use as well. I would be careful about using the "disable all bloatware" button because it is not setup correctly for this new device yet.
#3 Give it some time. It you have a TON of media on a micro EXSD card then it can take a new phone a long time to index and create thumbnails for all of that information. It should speed up i about a day or so once it finishes indexing. this will also effect your battery life till it is completed.
Click to expand...
Click to collapse
I used the disable all bloatware. Looks to be working fine.
Sent from my SAMSUNG-SM-N930A using Tapatalk
borijess said:
I used the disable all bloatware. Looks to be working fine.
Click to expand...
Click to collapse
Yeah it will break Samsung Pay though... I think it's related to the UIBCVirtualSiftkey app, but have not confirmed that. Also it does not get nearly all of the bloatware. There is a ton of new AT&T junk it does not disable as well as a bunch of new Facebook crap and Samsung crap.
ShrekOpher said:
Yeah it will break Samsung Pay though... I think it's related to the UIBCVirtualSiftkey app, but have not confirmed that. Also it does not get nearly all of the bloatware. There is a ton of new AT&T junk it does not disable as well as a bunch of new Facebook crap and Samsung crap.
Click to expand...
Click to collapse
Can you provide a list?
Sent from my SAMSUNG-SM-N930A using Tapatalk
borijess said:
Can you provide a list?
Click to expand...
Click to collapse
Definitely. It gave me the perfect opportunity to try out the scroll capture. Let me know if you have any questions. This is what I have disabled so far without any issues. Once I get a full completed list I'll probably do a write up about how to clean up the dock ROM. I think I'm about 70% done with the list.
So far I'm getting about 6.5 hrs of SOT and about 28 his of usage.
ShrekOpher said:
Definitely. It gave me the perfect opportunity to try out the scroll capture. Let me know if you have any questions. This is what I have disabled so far without any issues. Once I get a full completed list I'll probably do a write up about how to clean up the dock ROM. I think I'm about 70% done with the list.
So far I'm getting about 6.5 hrs of SOT and about 28 his of usage.
Click to expand...
Click to collapse
What is the file that could mess up Samsung pay? I can always restore disabled apps correct?
Sent from my SAMSUNG-SM-N930A using Tapatalk
borijess said:
What is the file that could mess up Samsung pay? I can always restore disabled apps correct?
Click to expand...
Click to collapse
I am not positive but I think it's the UIBCVirtualSoftkey if the doesn't fix it. Just enable all of the stuff you disabled and reboot. Then only disable what's on my list. I can confirm is working with my setup.
I'm exchanging mine tomorrow and was hoping for better news but from your experience it sounds like I may have to deal with an expensive piece of crap.
ShrekOpher said:
My guess is it has to do with one or multiple of the apps you have installed. There is a 3 step process to fix this issue.
#1 - See if any of the apps you have installed are running rouge. Check, battery usage, RAM usage, and Data Usage to see if you have any bad apps. Uninstall any 3rd party apps that you installed that are running too much. They may just still need updated to be optimized for this new device. Also you can use the "sleep" (doze) feature in battery management to restrict apps that are running TOO much in the background. Also on any apps that are using too much data or RAM check the permissions. If an app does not need access to Data, Media etc to work properly turn off those permissions.
#2 Debloat the device. I like "Package Disabler Pro". Basically if it has Facebook, FB, or ATT in the name you should disable it. Also you can go through an disable any Samsung software you do not use as well. I would be careful about using the "disable all bloatware" button because it is not setup correctly for this new device yet.
#3 Give it some time. It you have a TON of media on a micro EXSD card then it can take a new phone a long time to index and create thumbnails for all of that information. It should speed up i about a day or so once it finishes indexing. this will also effect your battery life till it is completed.
Click to expand...
Click to collapse
I used this app and it's worked wonders.
Sent from my Galaxy Note7 using XDA Labs
This phone lags a lot especially in Chrome and other scrolling apps.. sometimes switching between apps takes lot of time too...I have been using Samsung phones for quite sometime, but unfortunately this is the phone lagging more than any other phone for me..debloated almost 150 apps, still the same..and it gets hot as well when watching videos...none of this happened for me on Note 5...I think Samsung screwed with Note7 software..when they initially released Grace UX software for Note 5, it was very smooth...but the final Note7 software seems to be laggy...the same apps and setup on Note5 doesn't give me these issues....gonna return and try my luck with new one...but good thing is battery life has been very good for me...easily 5hrs SOT whereas on Note5, I used to get only 3.5 hrs
Sent from my SAMSUNG-SM-N930A using Tapatalk
---------- Post added at 11:32 PM ---------- Previous post was at 11:22 PM ----------
chrispyutec said:
Having Lag & Heat Issues???
Is anyone having lag issue or any heat issues? I guess I have one of the problem notes as mine has extreme lag and heat problems. I have cleared all caches and have also factory reset several times. What's weird is that the lag will come and go, but it's there more often than not. Even scrolling in settings has the jitters.
Any ideas anyone. I might be better off going through the miserable process of exchanging through the mail.
Thanks in advance for any help!
Click to expand...
Click to collapse
I am exactly facing this issue..I am a heavy XDA user, so I monitor all the apps on phone and debloated lot (around 150) apps...still the same.. thing is lag doesn't happen all the times..but it starts from no where..but the phone consistently gets hot while moderate usage
Sent from my SAMSUNG-SM-N930A using Tapatalk
When the phone is working properly, bloatware should make no noticeable difference and debloating is unnecessary.
My Note 7 usually responds instantly, with no lag, no matter how heavily I'm using it. That's with nothing disabled or debloated. (I'm using the Google Now launcher but everything else is stock/default, with no esoteric apps or settings.)
However, on three occasions in the week I've had the phone, it's gotten into a mode with serious lag while typing. In this mode, even though the characters I type still show up on the screen instantly, I can type 3 or 4 characters with no sound feedback or vibration feedback; then, there will be 3 or 4 delayed clicks and vibrations in rapid succession.
When this serious-lag mode starts, it continues even if I close all apps and put the phone in Airplane mode. It also makes no difference if I turn on power-saving mode, or even maximum power-saving. The only thing I've found that fixes it (for a while) is rebooting.
The intermittent occurrence of the serious-lag problem shows that it's not a matter of the phone being underpowered or overloaded. There's some specific bug that needs to be fixed.
UPDATE: It just happened for a fourth time. And when the serious-lag mode starts, it's not just typing that has a delay with audio feedback. The feedback delay also occurs when I tap on icons, tap on the Back or Recent-apps soft-buttons, etc. There's a delay of up to a second or two between tapping and hearing the feedback.
On the other hand, compute-intensive tasks--such as playing streaming video--work properly even when the phone is in serious-lag mode. So that's further evidence that there is some specific bug, and not a general problem of being underpowered or overloaded.
Gary02468 said:
When the phone is working properly, bloatware should make no noticeable difference and debloating is unnecessary.
My Note 7 usually responds instantly, with no lag, no matter how heavily I'm using it. That's with nothing disabled or debloated. (I'm using the Google Now launcher but everything else is stock/default, with no esoteric apps or settings.)
However, on three occasions in the week I've had the phone, it's gotten into a mode with serious lag while typing. In this mode, even though the characters I type still show up on the screen instantly, I can type 3 or 4 characters with no sound feedback or vibration feedback; then, there will be 3 or 4 delayed clicks and vibrations in rapid succession.
When this serious-lag mode starts, it continues even if I close all apps and put the phone in Airplane mode. It also makes no difference if I turn on power-saving mode, or even maximum power-saving. The only thing I've found that fixes it (for a while) is rebooting.
The intermittent occurrence of the serious-lag problem shows that it's not a matter of the phone being underpowered or overloaded. There's some specific bug that needs to be fixed.
UPDATE: It just happened for a fourth time. And when the serious-lag mode starts, it's not just typing that has a delay with audio feedback. The feedback delay also occurs when I tap on icons, tap on the Back or Recent-apps soft-buttons, etc. There's a delay of up to a second or two between tapping and hearing the feedback.
On the other hand, compute-intensive tasks--such as playing streaming video--work properly even when the phone is in serious-lag mode. So that's further evidence that there is some specific bug, and not a general problem of being underpowered or overloaded.
Click to expand...
Click to collapse
Curious, do these typing lags occur on the hangouts app?!?! It seems to be the ONLY app on my Note 5 (and all the other phones I've used) that has a VERY NOTICEABLE KEYBOARD LAG, especially with Samsung Stock keyboard. This happens even with other keyboards, but is WORST with samsung keyboard.....
quordandis said:
Curious, do these typing lags occur on the hangouts app?!?! It seems to be the ONLY app on my Note 5 (and all the other phones I've used) that has a VERY NOTICEABLE KEYBOARD LAG, especially with Samsung Stock keyboard. This happens even with other keyboards, but is WORST with samsung keyboard.....
Click to expand...
Click to collapse
No, the problem I'm seeing is unrelated to any app or keyboard. When my phone is in serious-lag mode, the problem occurs across the board. When it's not in lag-mode (which it usually isn't), then there's no lag in any app, including Hangouts.
Gary02468 said:
No, the problem I'm seeing is unrelated to any app or keyboard. When my phone is in serious-lag mode, the problem occurs across the board. When it's not in lag-mode (which it usually isn't), then there's no lag in any app, including Hangouts.
Click to expand...
Click to collapse
Hmmm.....interesting....I use the app os monitor to show which processes are running at high cpu %. Perhaps that can shed some light on your lag issue?
quordandis said:
Hmmm.....interesting....I use the app os monitor to show which processes are running at high cpu %. Perhaps that can shed some light on your lag issue?
Click to expand...
Click to collapse
It happens even with all apps closed, no heat, no battery drain. It's not a side-effect of the phone being bogged down with anything.

All games lag after a few minutes, app switcher fixes lag temporarily

So I don't know when this started happening but almost every single game on my Galaxy S7 lags after about a minute of playing, like the frame rate will get cut down from 60fps to a choppy 30-50fps, and stay that way unless I exit to the home screen and back into the game or press the app switcher button for a second and go back into the game, then it jumps back to 60fps for a little bit and the lag goes away but it always comes back.
I have no idea what's causing this problem and I'm tempted to factory reset my phone to see if that fixes it because I've tried almost everything (disable game launcher and tools, disable the packages, game mode, high performance mode, delete cache, rebooting, etc.)
Does anyone else have this problem and could it be a certain app using resources in the background that's causing lag? I'm on the stock rom from at&t, no root and no bootloader unlocked, everything is pretty much vanilla.
Finally after months of trying to figure this out, I fixed it by pure luck.
Every Galaxy S7 user should do the following:
1. Download Game Tuner
2. Create a custom profile
3. Set FPS to 60
NOW ON TO THE MOST IMPORTANT STEP!
4. Set HW Performance to +4
HW Performance affects the stupid throttling that games seem to do that prevents smooth 60fps in an effort to preserve battery life and keep heat down I'm guessing. Setting it to +4 fixed all the lag I was getting in every single game.

gaming stutter issue?

I'm not sure if it's because I'm rooted or what, but I noticed most basic games lag really bad on my phone, like fallout shelter for instance it locks up for a few seconds every couple of seconds and it's pretty annoying... Any ideas?
KyleBryant said:
I'm not sure if it's because I'm rooted or what, but I noticed most basic games lag really bad on my phone, like fallout shelter for instance it locks up for a few seconds every couple of seconds and it's pretty annoying... Any ideas?
Click to expand...
Click to collapse
Since I've had this phone I have had some performance issues with games and apps. Some of them were very strange (Ie: certain graphics or images showing up as black boxes.) Most of these were fixed via app updates. Still having some strange issues with certain apps being cutoff at the bottom (ie Snapchat just had a black bar on the bottom which makes it hard to send a message because you cannot press the send button.) I am now a month and a half into this phone. I am experiencing lag even while scrolling through apps or switching apps. I am also experiencing strange delays with the keyboard popping up when I touch a text field. It's hit or miss. Overall I still love the phone.
Side question. How did you root?
Sent from my Moto E (4) using Tapatalk
I posted a guide to rooting here https://forum.xda-developers.com/moto-e4/how-to/moto-e-guide-to-rooting-t3652982

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