I have a laptop with hybrid Intel+NVIDIA graphics, and I can say that offloading games and such to the dGPU while letting the iGPU handle everything else works with zero issues for me on Wayland.
On desktops where the NVIDIA GPU handles everything I don't have that much experience on Wayland although when I did try it earlier this year it was surprisingly good, but with occasional dumb bugs like Plasma panels freezing or XWayland apps breaking in funny ways. Although honestly just a few years back running Plasma X11 on NVIDIA wasn't much better than Wayland now.