Glad you liked it. Coyote time is on the to-do list. lol. For the other problem, not sure what that is, the camera should only be slightly in front of the player the faster you are going, are you saying it's like that normally even when standing still? Out of curiosity, (for bug-testing purposes), what resolution is your display?
I'm 99% sure it has to do with fullscreen being fullscreen instead of windowed fullscreen. Right after your game, i played another gamemaker game, and it had the same problem, but restarting it seemed to fix it. I think that might be on me :P (it basically looked like it rendered at 200% scale and only the top left corner was visible. STILL FUN THO!