as a counterpoint: my sway (Wayland) system is the first one I've ever had where I can watch youtube, or vlc/mpv at 60fps without flickering, dropping frames or tearing

I've used nvidia and radeon cards, plus intel onboard in this machine with X and none of them allowed all of the above

the display server also remains responsive even if one client starts going nuts

generally sway is considerably more responsive on the same system than the Xorg it replaced

I am very happy with it