This sounds similar to bug 1883456... Please: 1. Try opening the 'Extensions' app and disable 'Ubuntu AppIndicators'. Does that fix it?
2. Run 'top' and tell us if any process is using high CPU. 3. Run the following commands after you have experienced the issue: journalctl -b0 > journal.txt gsettings list-recursively org.gnome.shell > settings.txt and attach the resulting text files here. ** Package changed: xorg (Ubuntu) => gnome-shell (Ubuntu) ** Changed in: gnome-shell (Ubuntu) Status: New => Incomplete -- You received this bug notification because you are a member of Ubuntu-X, which is subscribed to xorg in Ubuntu. https://bugs.launchpad.net/bugs/1890001 Title: Random stuttering while in game To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/gnome-shell/+bug/1890001/+subscriptions _______________________________________________ Mailing list: https://launchpad.net/~ubuntu-x-swat Post to : ubuntu-x-swat@lists.launchpad.net Unsubscribe : https://launchpad.net/~ubuntu-x-swat More help : https://help.launchpad.net/ListHelp