Yes, actually Super Hexagon was one of the games I play and was thinking of when I made my comment. I find it difficult enough to play with my older computer using Optimus, but when I tried it on Wayland there was at least another 100 ms of latency. It was unplayable to the point I feel pretty sure even a TAS couldn't keep it going for long. Compositing everything with no way for apps to bypass it when necessary is profoundly stupid.