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Bug Vsync isn't used when de-maximizing the game window, until re-enabled

Discussion in 'Editor & General Support' started by aveakrause, Aug 29, 2021.

  1. aveakrause


    Oct 3, 2018
    Checking the "vsync" option in the display settings in the game window turns vsync on.
    If you then maximize the window, then de-maximize it, even though the vsync option is still checked, it is not in fact being used. Reticking (untick + retick) the option re-enables vsync.

    This is an issue for me because while vsync is off, my GPU hits 100%, but since I stream on Twitch, this noticeably lags my Twitch stream. If I then retick the option, my GPU goes back down to it's standard 60ish% while streaming + deving.

    Expected behavior: Unity always respects the vsync option in the display settings for the game window.
    Actual behavior: Unity forgets the fact that vsync is supposed to be enabled after de-maximizing the game window.

    I've seen this issue in many different versions. This project is 2020.3.2f1, the other project I work in all the time has the same issue using 2020.3.12f1.