I don't know if you fixed your crysis problem or not. Depending on your OS. Go to C:\users\<your login name>\ and find the my documents\mygames directory. In there you should find a crysis folder.. Delete or rename that folder. When you launch crysis again it'll recreate it. I had the exact same problem after I tried to max everything. So.. instead i set everythign to high w/ 2x aa and it seems to be running.