I know you're talking about Nvidia specifically, but I find it kinda funny how people say that regarding X11 and Wayland even for AMD and Intel, because for me the experience is literally the opposite -- when I try playing games on Xorg, they always stutter and freeze really badly to near-unplayable extents even when FPS counters report they're running at 60 FPS (or if I set them to the lowest possible graphics), but ever since I switched to Wayland, the issue was just gone and games run flawlessly now. And note that I'm using Plasma, the one people often said had a worse Wayland session than Gnome and Wayland-based WMs.
I don't know why this is the case for me specifically when it seems like literally everyone else reports the opposite happening to them (and afaik Wine and most Linux games still run in XWayland). Does Xorg just hate me in particular?