App is low on fps on new upgrade to android 11

[Barlerer]

Summary

Since upgrading my S20 plus to the new android 11 update, the app appears to perform super slow. I have also attached a view, and the low fps you will see is not from the recording, but from only the mattermost app.

Environment Information

• Device Name: Samsung Galaxy S20 Plus
• OS Version: Android 11
• Mattermost App Version: 1.38.0
• Mattermost Server Version: 5.26.0

Steps to reproduce

Have an S20 with the latest update, install mattermost app and try to use anything, you will notice the sluggish behaviour

Expected behavior

Before the upgrade, the app used to work very fast and was performing well.

Observed behavior

Doesn't matter which channel or team, once I open the app every thing is very low performance
Video the online preview makes it a bit hard to see the difference, try to download the file to best see the issue

Possible fixes

If you can, link to the line of code that might be responsible for the problem.

[amyblais]

Does this happen after re-installing the app? We suspect this may be device-specific.

[Barlerer]

Yes, also after re-installing. בתאריך יום ו׳, 18 בדצמ׳ 2020, 16:24, מאת Amy Blais ‏< [email protected]>:

…

Does this happen after re-installing the app? We suspect this may be device-specific. — You are receiving this because you authored the thread. Reply to this email directly, view it on GitHub <#5046 (comment)>, or unsubscribe <https://github.com/notifications/unsubscribe-auth/AIIFYBESU6LLI2VPTQFUWQ3SVNQZRANCNFSM4VAZKH6A> .

[koenrot]

Just here to let you know I have the exact same issue on a similar phone.

There is no difference in having the phone run on 120fps or 60 fps. The app appears to be running on a much lower framerate. Can't really say how much fps exactly, but if I have to guess it would be lower than 25fps.

Environment Information

• Device Name: Samsung Galaxy S20
• OS Version: Android 11
• Mattermost App Version: 1.38.1
• Mattermost Server Version: 5.26.0

[SteveJos]

I can confirm this issue since the upgrade to Android 11 on my Samsung Galaxy S20+
The navigation in the app is sluggish and slow.
The developer overlay shows a maximum of 30fps in the app. All other apps works as usual.

[panther7]

Same problem, Samsung S10e, Android 11... Maybe bug is in OneUI 3.0 by Samsung.

[dmitriy-boev]

Same thing on s10, android 11.

[kirkbowe]

Same low frame rate issue on Samsung Note 20 Ultra. Latest Android 11 and One UI 3. Mattermost client 1.39.0 (build 3000341). Have not noticed any other apps exhibiting the same issue. No difference whether device is set to fixed 60 Hz or adaptive 120 Hz. Had a quick look at a few other React Native apps but didn't notice the same issue.

[rajpootathar]

same issue on my galaxy note 10 + , android 11 and one UI 3 update.

[loicsapone]

Same problem on my Samsung since the upgrade from Android 10 to 11 (OneUI 2 to 3)

Environment Information

Device Name: Samsung Galaxy S10
OS Version: Android 11, OneUI 3.0
Mattermost App Version: 1.39.0
Mattermost Server Version: 5.30.0

[jfolz]

Also here, S10e after update to Android 11 / OneUI 3.0. The actual chat portion of the app is barely usable. Settings and such are unaffected.

[ahmednabil950]

I am using s20 plus and i can tell this is a confirmation that the app on latest upgrade is really super slow in navigation and any animation effect is slow (very obvious in side menu)

[dmitriy-boev]

Seems resolved after latest web view update.

[amyblais]

Would you have more details on what update fixed the issue?

[rezun]

Seems resolved after latest web view update.

I just installed the most recent version 88.0.4324.141 (released today) but it didn't change anything. The problem still persists.

[jfolz]

Update didn't make any difference for me either. Same for the beta, dev, and canary WebView apps. There is no appreciable difference between any of these.

[Barlerer]

Same for me, updated web views and not change

[stuartm]

Same issue with S10 updated to Android 11, it's unusable. Conversely mattermost in the browser on the same device is lightning fast. This is the only app with the issue so far in my testing, that includes other html based apps using webview.

[AIRpwnz]

Same for me, samsung s10e
Very low fps in the app

[vbrz]

I also have this issue (Galaxy S20 Ultra)

[panther7]

We know, we know, problem is Samsung/OneUI 3.0/Android 11.

Question is, whether will be Mattermost app fixed?

[enahum]

Hi all, I've attempted something to try and see if it helps, I was unable to really test it as the app worked without issues on my Pixel 4.

Would you please try running this version https://pr-builds.mattermost.com/mattermost-mobile/android-pr-fps/Mattermost_Beta.apk and report back?

Thanks in advance

[rajpootathar]

Hi all, I've attempted something to try and see if it helps, I was unable to really test it as the app worked without issues on my Pixel 4.

Would you please try running this version https://pr-builds.mattermost.com/mattermost-mobile/android-pr-fps/Mattermost_Beta.apk and report back?

Thanks in advance

Hi @enahum , I tried the build you mentioned.. it is still clunky and fps are really bad for me

device : Note 10 + (One Ui 3+)
Android Version : 11

[enahum]

@rajpootathar interesting as I'm setting the app to use the max amount of fps available on the device

 protected void setFrameRate() {
        ArrayList<HashMap<String, Object>> supported = getSupportedModes();
        boolean seen = false;
        HashMap<String, Object> best = null;
        for (HashMap<String, Object> stringObjectHashMap : supported) {
            if (!seen || (Float)stringObjectHashMap.getOrDefault("refreshRate", 0f) > (Float)best.getOrDefault("refreshRate", 0f)) {
                seen = true;
                best = stringObjectHashMap;
            }
        }

        if (best != null && best.get("id") != null) {
            final Window window = this.getWindow();
            final WindowManager.LayoutParams params = window.getAttributes();
            params.preferredDisplayModeId =(int)best.get("id");
            window.setAttributes(params);
        }
    }

wondering what else could cause this and also why it only seems to be affecting Samsung with One UI 3+

[Barlerer]

Hi all, I've attempted something to try and see if it helps, I was unable to really test it as the app worked without issues on my Pixel 4.

Would you please try running this version https://pr-builds.mattermost.com/mattermost-mobile/android-pr-fps/Mattermost_Beta.apk and report back?

Thanks in advance

Also doesn't work for me

[enahum]

One long shot, what happens if you enable Developer options in your phone and change the settings for:

• Window animation scale
• Transition animation scale
• Animator duration scale

and set them all to .5x

[Barlerer]

One long shot, what happens if you enable Developer options in your phone and change the settings for:

• Window animation scale
• Transition animation scale
• Animator duration scale

and set them all to .5x

Also doesn't work.

[svelle]

Hey @SteveJos could you give me some more info on what kind of tool you used to get these detailed metrics from your screenshot. I'm seeing similar behavior on my Pixel 5 and would like to further investigate.

[VincentSC]

One UI 3.1 is out for S20 and S21. Has this maybe solved it? https://news.samsung.com/us/samsung-one-ui-3-1-update-powerful-features-galaxy-s21-galaxy-s20-galaxy-note20-galaxy-z-series/

[VincentSC]

For measuring performance see https://developer.android.com/training/testing/performance
I'm happy to run a test, but have no time to define it.

[chicout]

I have the same issue with my new Samsung S21 Ultra

[Barlerer]

Just to reiterate, the issue does get worse the more text is on screen. If it is files\images it works well.

[mech01nc01]

hello,

we have the same issue, especially when lots of text is visible, extremely if someone quotes lots of text

2xS20+, more than 20 Motorola G30 (all Android 11)
Version 5.34.2
App-Version 1.43.0

we could send you a test-device if it would help

[enahum]

Hey guys, made a minor tweak to the app and want to validate if that makes a difference for you.

Here is an apk to test it out.

[Barlerer]

It is the same for me 😢

[enahum]

@Barlerer when you say the same, you mean channel with lots of text do look janky when scrolling up/down ? or blank spaces?

would you mind sharing a video?

[Barlerer]

video_2021-05-17_18-51-36.mp4

[rezun]

Also tested that apk version and it didn't make a difference for me (on S20).
Stuttering is happening when text is seen. If it's mostly images, it's smooth.
It's the same with the channel list btw. Since that is text only, it also stutters when scrolling there.

[larsellingsen]

I have an interresting observation on this issue: When I scroll in a search result page, the scrolling i perfectly smooth. So when i scroll in a normal channel, the scrolling stutters. But when i search for the same channel with "in:channelname", the resulting page has normal smooth scrolling.

(S10 Plus, Android 11, One UI 3.1, app version 1.43.0 build 3000356)

[Barlerer]

@larsellingsen That's a good one. Also for me, the scrolling works like wonder when viewed from the search.

[enahum]

@larsellingsen thanks for the observation, that is really helpful.

I started digging into this and other related matters and I'm looking to do the following to help with performance:

• try and measure the height of each post before it gets saved to the data store, that way the list won't need to perform calculations while the messages are being rendered on screen. (At least make the best to estimate it as accurate as possible but there are too many variants and only one thread)
• refactor the post list and post components to make them lightweight

The above is going to take some time, but with the hope that it helps.

The one thing that I'm banging my head with, is the fact that it appears to studder only when text or large amout of text is displayed, I know recently someone found that the Text component for RN is not performing great but not sure why is causing this on the main post list but not anywhere else (ie: search) could it be the amount of posts? 🤔

Anyway, I'll be quiet for a while and try and nail this thing down, if you can think of ways to fix this, please reach out to me in the community server.

[jfolz]

The one thing that I'm banging my head with, is the fact that it appears to studder only when text or large amout of text is displayed, I know recently someone found that the Text component for RN is not performing great but not sure why is causing this on the main post list but not anywhere else (ie: search) could it be the amount of posts? 🤔

Number of posts/results doesn't seem to matter. Even searches with a lot of results (hundreds) are fast and I made a channel with a ton of (nonsense) posts that renders fast. The trick is that there can only be one word per line with explicit line breaks. I also tried three words per line and noticed this is slightly slower than it should be, but nowhere near as bad as "normal" messages. Maybe something in channels is forcing soft line wrap to be calculated over and over?

[enahum]

So I found out that the channel post list is inverted and that is causing the thing to lag.. after changing the list to not to be inverted (same as search) then it feels super smooth (like search).

I need to dig into the react-native code and see if I'm able to spot the reason why this happens.

[enahum]

Also found this.. facebook/react-native#30034 they mention that scrolling with the keyboard opened does not seem to lag (which is true for me).

Perhaps we should try and add our findings in that github issue..

[enahum]

Ok after playing with this for a while and while there is still work to be done, can you please try with this build and see if this one resolves the lag on scroll?

Thanks.

[VincentSC]

So. Much. Better! Thanks!
(Samsung Note10+)

[rezun]

@enahum
Indeed, that build is smooth as butter on my S20

[enahum]

Let's wait on the others to report back as I want to get as much eyes as possible before I continue moving forward with the rest of the work needed.

Thanks for your patience and guidance to try and figure out what in the hell was wrong here.

[TwizzyDizzy]

@enahum

can you please try with this build and see if this one resolves the lag on scroll?

With this beta build I can confirm the absence of any and all perceived lags. As smooth as freshly shaved. Thanks for your efforts!

Device: Pixel 2 XL (taimen) on LineageOS 18.1 (Android 11).

Cheers & Thanks
Thomas

[larsellingsen]

The beta is smooth as silk on my S10+! Thank you @enahum! 😃👏🏻👏🏻

[Barlerer]

Words cannot describe how happy I am that Mattermost is finally usable again on my phone!
Works perfectly!

[mech01nc01]

also tested on S20+, works like charm ;)

[VincentSC]

I'm now really curious why it was initially only not working on specific phones, which were all fast. Reproduction was the main problem, so I did not expect something non-UI. Can anybody explain?

[enahum]

@VincentSC on Android 11 the FlatList component transformation had a performance degradation when using transform:[{scaleY: -1}] which is what React Native ships as default for vertically inverted lists, this degradation is not seen when applying the "deprecated" scaleY: -1 property without transformation, the reality is that this was a lucky strike by someone who was facing the same problem as you can read here facebook/react-native#30034

[Ch1llb0]

It's smooth and perfect here as well. Please get this out as a regular update to users as fast as possible 👍🏻 Great work, thank you!

[enahum]

It's smooth and perfect here as well. Please get this out as a regular update to users as fast as possible 👍🏻 Great work, thank you!

Thanks @Ch1llb0 will try but I'm still working on some other needed improvements that require a bit of time before we can ship the "fix", my rough estimate to submit the PR is about a week or so, just wanted to confirm this build caused the desired effect. Sorry about the inconvenience.

[enahum]

Next release does have this fix and other perf improvements ;)

Thanks guys for your patience and help ❤️

[panther7]

Finally, thanks...