Please report the bug upstream at
https://gitlab.gnome.org/GNOME/mutter/-/issues and mention:
* GPU model
* graphics driver in use (lspci -k)
* The version of libmutter installed (should be 44.0)
* That CLUTTER_PAINT=disable-dynamic-max-render-time fixes it
** Changed in: mutter (Ubuntu)
Importance: Undecided => High
** Changed in: mutter (Ubuntu)
Status: Incomplete => Triaged
** Bug watch added: gitlab.gnome.org/GNOME/mutter/-/issues #2334
https://gitlab.gnome.org/GNOME/mutter/-/issues/2334
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https://bugs.launchpad.net/bugs/2016990
Title:
[Lunar] Irregular FPS with Path of Exile
Status in mutter package in Ubuntu:
Triaged
Bug description:
I'm having a strange issue with the game Path of Exile (free). With Ubuntu
Wayland session, vsync on, I get very irregular frame rates, it jumps around 40
fps.
If I switch to Plasma Wayland the game is very smooth 60 fps.
I'm running the game from Steam with Proton. I've tried Proton Experimental
and Proton 8.0 so far, no difference.
The game uses Vulkan so I guess it's being allowed to set up all the swap and
presentation stuff pretty much itself... ?
MUTTER_DEBUG_DISABLE_TRIPLE_BUFFERING=1 doesn't help Mutter so it's
not strictly related to triple buffering, which makes sense since it's
a full screen game anyway.
Kernel: 6.2.0-1003-lowlatency
GPU: Radeon 6800 XT
CPU: Ryzen 9 5900X
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