I always played mapleroyals smoothly (should be 144hz) and the ingame display was large. I then accidently ran the setup in the mapleroyals folder, and now my refresh rate sucks, making the game laggy to play, as well as making the screen smaller (i can't see the end of the arrow animation on my bowmaster, if that makes sense). I tried all 3 profiles the setup provides, as well as a reinstall of mapleroyals, to no avail.
