** Changed in: mutter (Ubuntu Lunar) Status: In Progress => Fix Committed
** Changed in: mutter (Ubuntu Lunar) Assignee: (unassigned) => Jeremy Bícha (jbicha) -- 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: Irregular frame rate in some fullscreen games Status in Mutter: Fix Released Status in mutter package in Ubuntu: Fix Released Status in mutter source package in Jammy: Won't Fix Status in mutter source package in Lunar: Fix Committed Status in mutter source package in Mantic: Fix Released Bug description: [ Impact ] 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. [ Test Plan ] None known, other than the OP to run the game. [ Where problems could occur ] In rendering performance of fullscreen apps/games. [ Workaround ] Add this to /etc/environment: CLUTTER_PAINT=disable-dynamic-max-render-time [ Other Info ] 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