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HDRP Performance Spikes

Discussion in 'Editor & General Support' started by FortisVenaliter, Oct 24, 2021.

  1. FortisVenaliter

    FortisVenaliter

    Joined:
    Mar 23, 2013
    Posts:
    48
    Using Unity 2020.3.19f1 HDRP, with a stationary camera in the provided sample scene, I'm getting these crazy 40-60 ms spikes from Gfx.WaitForPresentOnGfxThread.

    Curiously, the spikes are rarer and only about 1/3 as bad when VSync is turned on.

    Everything I've read while googling indicates a busy GPU, but I'm not seeing anything that would account for the GPU being regularly busy for 50ms.

    Any ideas?

    upload_2021-10-24_11-18-59.png
     
    FortisVenaliter, Oct 24, 2021
    #1

  2. PraetorBlue

    PraetorBlue

    Joined:
    Dec 13, 2012
    Posts:
    7,909
    Is this in the editor or a standalone player?
     
    PraetorBlue, Oct 24, 2021
    #2

  3. FortisVenaliter

    FortisVenaliter

    Joined:
    Mar 23, 2013
    Posts:
    48
    In the editor.
     
    FortisVenaliter, Oct 25, 2021
    #3

  4. PraetorBlue

    PraetorBlue

    Joined:
    Dec 13, 2012
    Posts:
    7,909
    Try profiling your game in a standalone player and see if the problem persists.
     
    PraetorBlue, Oct 25, 2021
    #4