There's no way to disable the compositor, so if you play any windowed games, you'll have some extra input lag. It shouldn't matter if you play fullscreen games though.
Missing Xorg tools like xinput or xrandr. Maybe I'm too finicky, but sometimes I can't find the exact mouse speed I want through the settings GUI (for example, in KDE Plasma there are 11 steps from slowest to fastest), and through xinput commands I can just type any speed I want, which is very useful if one step feels too slow but the next one feels too fast.
I also want to increase the screen's gamma level sometimes and I haven't found any way to do that at all on Wayland.
A few gaming related downsides for me:
There's no way to disable the compositor, so if you play any windowed games, you'll have some extra input lag. It shouldn't matter if you play fullscreen games though.
Missing Xorg tools like xinput or xrandr. Maybe I'm too finicky, but sometimes I can't find the exact mouse speed I want through the settings GUI (for example, in KDE Plasma there are 11 steps from slowest to fastest), and through xinput commands I can just type any speed I want, which is very useful if one step feels too slow but the next one feels too fast.
I also want to increase the screen's gamma level sometimes and I haven't found any way to do that at all on Wayland.