https://bugs.kde.org/show_bug.cgi?id=431707

--- Comment #10 from tempel.jul...@gmail.com ---
First: Thanks a lot for your efforts trying to reproduce!

I've re-tested and re-confirmed the issue with
-RX 5700 XT on linux 5.10.8 from stable Arch repo
-radv mesa-git 21.0.0_devel.133381.5331b1d9456
-regular Proton 5.13-5
-1440p 60Hz (I suggest limiting the display to 60Hz, as it makes vsync stutter
easier to perceive.)
-full refresh rate vsync enabled in the game (it's fifo)

I recommend setting

dxgi.maxFrameLatency = 1
dxgi.numBackBuffers = 3

in "steamapps/common/HITMAN2/Retail/dxvk.conf". The former option reduces
rendering frame time variance (independently from vsync), whereas the latter
ensures correct fifo triple buffer vsync behavior when fps are below refresh
rate (unless amdvlk is used instead of radv :( ). When you run the game on Xorg
with compositing suspended, the frame time graph of mangohud should now be
completely flat (both when vsync caps fps and below that cap) and it should
look as smooth as it can.

It seems that it might be random whether the Wayland stutter issue makes the
frame time graph look "aliased" or flat, however it looks stuttery anyway.
Does it really look as smooth for you @60Hz with high latency reduction vs.
lower settings/Xorg?

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