Since this is all mouse pointer relates and there is hardware for that, I can only assume it's a fixable problem.

OTOH the gnome developers have been talking about implementing triple buffering in the compositor. Tripple buffering is only needed when your renderer can't complete a frame faster than the scanout of a frame. Given that any modern GPU should be able to composite hundreds of frames per second this make me think something about Wayland or the gnome compositor in particular isn't designed as well as it could be.