Found a solution that seems to be working. It looks like others had similar issues with Intel Iris XE graphics.
https://bbs.archlinux.org/viewtopic.php?id=268244
https://forum.qubes-os.org/t/screen-flickering-in-qubes-4-1-on-tuxedo-infinitybook-pro-14-gen6/10927/4
Solution was to add i915.enable_psr=0 to the kernel parameters.
As shown here:
Thank you to @Vael_S for the help.