Indeed, if you prefer long term stability then you should stay on 20.04. We will be backporting some performance fixes to 20.04 as soon as it is safe to do so. In fact a couple are coming in mutter 3.36.4 and another in 3.36.5...
If you want to make 4K significantly faster on 20.04 in a safe way right now, then I recommend forcing it to use the old Intel driver which is better at frequency scaling. Just edit /etc/environment and add a new line: MESA_LOADER_DRIVER_OVERRIDE=i965 and then reboot. -- 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/1890802 Title: Big performance degradation in X11 + 4K resolution + fractional scaling in second monitor compared to Wayland To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/mutter/+bug/1890802/+subscriptions -- desktop-bugs mailing list desktop-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/desktop-bugs
