I haven't had problems with overheating (and I do put my laptop on a fan pad when I play) but I decided it couldn't hurt to check the fps, which never got higher than 97. Still I figured I might as well put keep it at 60, so I followed the instructions here to keep it at 60 (in the Nvidia card control panel). I guess it can't hurt to keep it lower! Thanks for the instructions!
On problem I had was not knowing what vsync was exactly, but I found it eventually!