@danil @lynnesbian True, the entire Nvidia stack depends on a matching version of the nvidia driver inside the flatpak runtime and on the system. If you mix in wayland, you also need GBM and KMS enabled on the "host" side and if you then mix in xwayland, you also need a pretty recent (latest?) driver version. Thats not flatpak, but mostly Nvidia.
So pretty much anything that uses freedesktop runtime >=21.08.9 should work.