rpm-ostree rebase ostree-unverified-registry:ghcr.io/ublue-os/bazzite-deck:stablerpm-ostree rebase ostree-unverified-registry:ghcr.io/ublue-os/bazzite-deck:stable
Depending on the game, there might be a transparent window decoration created which ends up breaking unredirection/direct scanout, which in turn breaks VRR. So far I've had success running the game in gamescope, both embedded and nested mode. Gamescope I guess ends up being the parent window and does not have transparent decorations, so once fullscreened VRR works. To fullscreen gamescope nested in Gnome, you do need to set the Gnome fullscreen shortcut keybind since the -f and -b options for gamescope don't seem to work in Gnome.
IDK if that info is worth putting in the README or an FAQ somewhere, but it's a pretty fundamental break in VRR on Gnome, apparently in both Wayland and X