https://bugs.kde.org/show_bug.cgi?id=495167

--- Comment #8 from Zamundaaa <xaver.h...@gmail.com> ---
I looked into this a bit more, and my theory was correct - it takes
consistently less than 200µs to do a commit for normal presentation, but with
LUT changes it takes 1-2ms instead, making KWin miss the deadline for the
frame. I'm not sure if this is a bug in amdgpu or if it's just how long the
hardware takes to respond, but either way we can improve the situation by
measuring how much time we spend in the kernel and adjusting the safety margin
accordingly.

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