Also testing the proposed fix, and it did not solve the issue for me after installing and rebooting. I am still getting significant lag in the terminal. The recommendation from comment #36 had been working perfectly until this morning.
$ sudo apt-cache policy mutter-common 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://ca.archive.ubuntu.com/ubuntu jammy-updates/main amd64 Packages 500 http://ca.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://ca.archive.ubuntu.com/ubuntu jammy/main amd64 Packages 500 http://ca.archive.ubuntu.com/ubuntu jammy/main i386 Packages -- You received this bug notification because you are a member of Ubuntu Desktop Bugs, which is subscribed to mutter in 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 -- desktop-bugs mailing list desktop-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/desktop-bugs