Can confirm this is an issue in ubuntu 18.04. Also affects Ubuntu Budgie (reported it here: https://bugs.launchpad.net/ubuntubudgie/+bug/1767264) which uses the same window manager as gnome shell (mutter). Animations/window dragging are locked to 60fps regardless of actual monitor refresh rate while everything else (glxgears, etc.) works as expected. This issue doesn't exist in gnome 3.28.1 in other Linux distributions so is likely the result of some Ubuntu 18.04 specific patches.
** Also affects: mutter (Ubuntu) Importance: Undecided Status: New -- 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/1767693 Title: 18.04 GNOME displays at 60fps even if the monitor is set to 144hz To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/meta-gnome3/+bug/1767693/+subscriptions -- desktop-bugs mailing list desktop-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/desktop-bugs