Thanks for the bug report. Please:
1. Open a terminal window and run 'top'. Now when the stutter is happening what processes does 'top' report as using the most CPU? 2. Run: lspci -k > lspcik.txt xrandr --verbose > xrandr.txt journalctl -b0 > journal.txt and attach the resulting text files here. ** Summary changed: - In response to Daniel Van Vugt's mail : On a 4k monitor, firefox playing 4k youtube video stutters… whereas in Unity it is smoooth. nvidia1050 + On a 4k monitor, firefox playing 4k youtube video stutters… whereas in Unity it is smooth. ** Tags added: nvidia performance ** Changed in: gnome-shell (Ubuntu) Status: New => Incomplete -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1879604 Title: On a 4k monitor, firefox playing 4k youtube video stutters… whereas in Unity it is smooth. To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/gnome-shell/+bug/1879604/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs