Fullscreen Firefox videos freeze GUI/Xorg [Gsync, regression, NVIDIA 495.44]

With NVIDIA drivers 495.44 full screen videos in Firefox freeze GUI/Xorg and make using the system impossible. This doesn’t happen right away but it takes a minute or two of watching them this way.

System specs:

Linux: 5.14.17 vanilla
Fedora 35
Xorg/XFCE no compositing
GSync compatible 144Hz monitor
GSync enabled