I fixed the stuttering by doing the following:
- Updated
/etc/default/grub
by addingi915.enable_psr=0
toGRUB_CMDLINE_LINUX_DEFAULT
. Example:
GRUB_CMDLINE_LINUX_DEFAULT="quiet splash i915.enable_psr=0"
- Ran
sudo update-grub
- Rebooted.
This was mentioned in the Fedora 34 post related to Trackpad Cursor Lag / Vertical Screen Tearing.