I tested the proposed fix for jammy and it did solve the issue for me. I upgraded both the libmutter-10-0 and mutter package (which also installs the updated dependencies listed below) and then rebooted. The libmutter-10-0 dependency appears to be necessary to remove the lag issues but the new version is not marked as required when installing mutter/mutter-common. Therefore, only upgrading mutter does not resolve the issue.
My policies: mutter: Installed: 42.9-0ubuntu8 Candidate: 42.9-0ubuntu8 Version table: *** 42.9-0ubuntu8 100 100 /var/lib/dpkg/status 42.9-0ubuntu7.1 500 500 http://at.archive.ubuntu.com/ubuntu jammy-updates/universe amd64 Packages 500 http://security.ubuntu.com/ubuntu jammy-security/universe amd64 Packages 42.9-0ubuntu7vv1 500 500 https://ppa.launchpadcontent.net/vanvugt/mutter/ubuntu jammy/main amd64 Packages 42.0-3ubuntu2 500 500 http://at.archive.ubuntu.com/ubuntu jammy/universe amd64 Packages libmutter-10-0: Installed: 42.9-0ubuntu8 Candidate: 42.9-0ubuntu8 Version table: *** 42.9-0ubuntu8 100 100 /var/lib/dpkg/status 42.9-0ubuntu7.1 500 500 http://at.archive.ubuntu.com/ubuntu jammy-updates/main amd64 Packages 500 http://security.ubuntu.com/ubuntu jammy-security/main amd64 Packages 42.9-0ubuntu7vv1 500 500 https://ppa.launchpadcontent.net/vanvugt/mutter/ubuntu jammy/main amd64 Packages 42.0-3ubuntu2 500 500 http://at.archive.ubuntu.com/ubuntu jammy/main amd64 Packages gir1.2-mutter-10: Installed: 42.9-0ubuntu8 Candidate: 42.9-0ubuntu8 Version table: *** 42.9-0ubuntu8 100 100 /var/lib/dpkg/status 42.9-0ubuntu7.1 500 500 http://at.archive.ubuntu.com/ubuntu jammy-updates/main amd64 Packages 500 http://security.ubuntu.com/ubuntu jammy-security/main amd64 Packages 42.9-0ubuntu7vv1 500 500 https://ppa.launchpadcontent.net/vanvugt/mutter/ubuntu jammy/main amd64 Packages 42.0-3ubuntu2 500 500 http://at.archive.ubuntu.com/ubuntu jammy/main amd64 Packages mutter-common: Installed: 42.9-0ubuntu8 Candidate: 42.9-0ubuntu8 Version table: *** 42.9-0ubuntu8 100 100 /var/lib/dpkg/status 42.9-0ubuntu7.1 500 500 http://at.archive.ubuntu.com/ubuntu jammy-updates/main amd64 Packages 500 http://at.archive.ubuntu.com/ubuntu jammy-updates/main i386 Packages 500 http://security.ubuntu.com/ubuntu jammy-security/main amd64 Packages 500 http://security.ubuntu.com/ubuntu jammy-security/main i386 Packages 42.9-0ubuntu7vv1 500 500 https://ppa.launchpadcontent.net/vanvugt/mutter/ubuntu jammy/main amd64 Packages 500 https://ppa.launchpadcontent.net/vanvugt/mutter/ubuntu jammy/main i386 Packages 42.0-3ubuntu2 500 500 http://at.archive.ubuntu.com/ubuntu jammy/main amd64 Packages 500 http://at.archive.ubuntu.com/ubuntu jammy/main i386 Packages -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/2059847 Title: Input lag or freezes on Nvidia desktops with X11 after logging "MetaSyncRing: Sync object is not ready -- were events handled properly?" To manage notifications about this bug go to: https://bugs.launchpad.net/mutter/+bug/2059847/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs