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This repository was archived by the owner on Apr 29, 2021. It is now read-only.

Ui slow on old Android device (OnePlus One) #426

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Ui slow on old Android device (OnePlus One)#426
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questionFurther information is requested

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@BattlefieldNoob
BattlefieldNoob
opened on Apr 13, 2020

Firstly, I thank you for this awesome library for unity (and I don't understand why isn't a official unity library/package), but I noticed that on my OnePlus One smartphone (or generally on old devices) the ui is very very slow, almost unusable (specially when scrolling a list/grid). I've tried also the UIWidgetsGallery, but I saw the same behavior (the framerate have some spikes at 15/10 fps).
I tested it on unity 2019.3.9f1 and 2020.1b5.
On iPhone XR it work very well.
I thought, it's possible to reduce the rendertexture resolution? The render phase should become faster right?

Thank you and sorry for my English

PS: I'm using Android 10 with custom ROM, but I don't have problems with other apps or games

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  1. BattlefieldNoob commented on Apr 13, 2020

    @BattlefieldNoob
    BattlefieldNoob
    on Apr 13, 2020
    Author

    I attach screenshot of the unity profiler, using UIWidgetsGallery example

    Scrolling up/down a two card list
    ScrollListUpDown

    Pressing a button from gallery home
    ButtonClick

    Pressing same button, but with deep profile enabled on inspection
    ButtonClickDeepProfile

  2. BattlefieldNoob
    changed the title [-]Very slow on old Android device (OnePlus One)[/-] [+]Ui slow on old Android device (OnePlus One)[/+] on Apr 13, 2020

  3. zhuxingwei commented on Apr 29, 2020

    @zhuxingwei
    zhuxingwei
    on Apr 29, 2020
    Contributor

    Hi, Thanks a lot for the issue report and sorry for this late response.

    (1) Yes, unlike flutter, UIWidgets relies on Unity runtime as its host. Therefore the runtime would add some extra burden to CPU, which may probably cause significant laggy on old devices.

    (2) Currently UIWidgets is fully tested only on Unity 2019.1.14f1 (including performance tests). Therefore this performance issue may also be caused by some incompatibility between UIWidgets and the later versions of Unity.

    (3) Yes, I think you can change the screen resolution of your project in PlayerSettings. It should remedy the performance issue if it is caused by a GPU bound.

  4. zhuxingwei
    added
    questionFurther information is requested
    on Apr 29, 2020

  5. PROGrand commented on Jan 8, 2021

    @PROGrand
    PROGrand
    on Jan 8, 2021

    I have poor repaint performance on almost all 2019-2020 Android devices with Unity 2020.2.1f1 (at least).
    I remove frameSpeedup/frameCooldown functionality using following:

    ...
private static void FrameRateSpeedUp() {
}

private static void FrameRateCooldown() {
}

private void Start() {
	
	Unity.UIWidgets.UI.Window.onFrameRateSpeedUp = FrameRateSpeedUp;
	Unity.UIWidgets.UI.Window.onFrameRateCoolDown = FrameRateCooldown; 
...

    At least with mine scenes all glitches gone.

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