Originally posted by user1
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If the games you tested use mouse input, the issue addressed by mutter MR 1915 is likely a big factor for the latency you saw. If they use OpenGL (as opposed to Vulkan), that could be another factor (in which case mutter merge request 1880 should help).
For a specific example: I'm playing racing games (using Vulkan via DXVK) on mutter (with MR 1762 applied) via Xwayland, and I'm not seeing any significant latency between my steering wheel movements and the corresponding movements of the virtual steering wheel in the game. (This is with a cheap Sony TV, which probably isn't setting any world records either latency wise)
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