Wayland does not contain any NVIDIA defeat devices, and neither does SwayWM. They just use standard Linux GPU interfaces. What I do know is that you can't use t

Wayland does not contain any NVIDIA defeat devices, and neither does SwayWM. They just use standard Linux GPU interfaces. What I do know is that you can't use the same codepaths you'd use with countless other GPUs, again including AMD and Intel: NVIDIA cards need special cases. This is just as true for KDE and GNOME, which also do not work as well with NVIDIA under Wayland, despite having special codepaths for NVIDIA cards specifically. This issue isn't new either. In fact, until very recently, it was significantly worse. But progress on NVIDIA's end has been slow, it seemingly gets completely stalled for years at a time. On the other hand, Nouveau works quite well with Wayland compositors if your card is well-supported, AND you never have to wait on a kernel upgrade because NVIDIA's shim hasn't been updated yet. There's basically exactly one driver that works this way. It's not a hardware problem, it's not a general GPU issue. There's just one thing it could be.