I never used cinnamon, but on what you’re saying, it might be that the version (popos ships) cinnamon is at doesn’t support nvidia on wayland, without bugs. I might be saying crap.

But on gnome (what i think is pop default DE) wayland works fine on 560, so yeah, very difficult situation.

At least for me, 560 works better with wayland than x11. xorg has problems with suspending/hibernating (IDK why), but wayland just works.