Updated to 570 from 550 on Ubuntu system using ppa. FPS playback went from 48/60 fps to less than 30fps on Vulkan on both X11 and Wayland. The new drivers are getting worse on each release.
NVidia 550:
nvidia-bug-report.log.gz (806.6 KB)
NVidia 570:
nvidia-bug-report.log.gz (443.6 KB)
You can beta test the FPS with my Vulkan video player (Ubuntu 22.04+) at:
Just do CTRL + H and FPS to check the FPS.
You can test it with this free movie: