Android build crashes randomly

[franpujolar]

I have an Android game, and everything works perfectly in the Editor, but when I run it on my Android device, it crashes sometimes.

This is how it goes: I’ll be playing my game, and randomly, or because of a reason that I don’t know, the game will quickly drop in FPS, it starts to go slower and slower until it’s frozen at 1 FPS. Changing scenes when it starts to slow down, is possible, but it ends up crashing anyway.

It’s not a device issue since it has happened on multiple devices.

It’s also not a scene-specific crash. It’s happened on my menu scene, game scene, and level creator scene.

It happens very rarely, today it took me about an hour of playing until I could replicate this bug, it eventually happened, and this time I had the profiler attached:

As you can see, VSync goes up to 5000+ms, the function causing the problem seems to be:

PlayerLoop → PostLateUpdate.FinishFrameRendering → Gfx.WaitForPresentOnGfxThread → WaitForTargetFPS → Semaphore.WaitForSignal

But I haven’t found out exactly what this is or how to solve it.

Does anyone know how to fix this?

[franpujolar]

After digging really deep, I found that some people fix this by disabling Optimized Frame Pacing In PlayerSettings>ResolutionAndPresentation>Optimized Frame Pacing. I’m going to try that and tell you if it worked, if you try it, please let me know if it fixed it for you.

Here is where I found this information:

Android build project freezes after 5 minutes with playerloop in profiler at 60,000 ms

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[franpujolar]

@franpujolar

After digging really deep, I found that some people fix this by disabling Optimized Frame Pacing In PlayerSettings>ResolutionAndPresentation>Optimized Frame Pacing. I’m going to try that and tell you if it worked, if you try it, please let me know if it fixed it for you.

Here is where I found this information:
https://discussions.unity.com/t/784527
https://discussions.unity.com/t/794814
https://discussions.unity.com/t/733882

seems to work for now

[AcidArrow]

@franpujolar

seems to work for now

And what did you change? Disabled optimize frame pacing?

[franpujolar]

@AcidArrow

And what did you change? Disabled optimize frame pacing?

Yes, hasn’t crashed since, but it’s hard to tell if it’s fixed with an error like this.

[WF_Bart]

I have the exact same issue.

My game plays at a silky smooth 60fps and then sometimes suddenly slows down until it almost stops. I can’t find rhyme or reason in when it happens. I quit the game, load from the same place and it works fine again. There’s no errors, nothing else in the profiler seems out of the ordinary. This is in Unity 2020.3.18f1.

I’ll try the proposed solution of disabling optimize frame pacing.