I just yesterday tried Wayland under Arch with a 1070 after a long time. Single WQHD monitor though. Although X11 is really performant, Wayland was more smooth regarding KDE desktop effects. Witcher 3 (via Heroic) showed fewer microstutters and I will try some more proton games and other applications over the weekend.
I recently had to downgrade nvidia drivers from 560 to 550 because wakeup from sleep and hibernate would coredump. I read that this is fixed with 560 but only under Wayland. The developers definitely progressed on the nvidia front.
0.000006 if you’re microdosing