This bug might be another cousin of bug 2017137 and bug 2017097 (both fixed as part of the 44.1 update). It would happen on either Wayland or Xorg if the graphics driver doesn't support timestamp queries.
-- You received this bug notification because you are a member of Desktop Packages, which is subscribed to mutter in Ubuntu. https://bugs.launchpad.net/bugs/2016990 Title: [Lunar] Irregular FPS with Path of Exile Status in Mutter: New 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 To manage notifications about this bug go to: https://bugs.launchpad.net/mutter/+bug/2016990/+subscriptions -- Mailing list: https://launchpad.net/~desktop-packages Post to : desktop-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~desktop-packages More help : https://help.launchpad.net/ListHelp
