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Help Wanted Semaphore.WaitForSignal causing FPS drop, but when I use GPU Profiler, FPS increased

Discussion in 'UGUI & TextMesh Pro' started by cdr9042, Jun 1, 2021.

  1. cdr9042

    cdr9042

    Joined:
    Apr 22, 2018
    Posts:
    82
    I'm suffering huge FPS issue. I tried making a scene with nothing but UI canvas and an Image, but it still only reaches 30 FPS. I tried checking every setting in Project Setting and scene setup that I use in my other projects that didn't have this issue, but I couldn't find anything. Same setting, same setup, but only this project is broken while others work fine

    Image 218.png

    I try to diagnose and turn on GPU Usage. Suddenly the FPS increased from 30 to 60!
    Image 220.png Image 221.png

    What is Semaphore.WaitForSignal doing to consume so much performance? I can't figure out why I have this problem only in one project while my other projects don't have it
     
  2. cdr9042

    cdr9042

    Joined:
    Apr 22, 2018
    Posts:
    82
    I fixed it. I disabled "Optimized Frame Pacing" in Project Setting > Player > Resolution and Presentation.
     
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