Originally posted by Tobuscus:

my game was running perfectly fine at 60fps before this update and now its like its locked at 5fps and nothing i change fixes it. I switched my resolution to the lowest possible but its still sitting at 5fps.

You may want to try a clean install. Another user on the forums proclaimed massive upgrades to the FPS on their end and it was one of the people who had complained about the FPS BEFORE the update.