deejrandom: For some reason my game will work really well for a bit then start stuttering and freezing, with my guy ending up across the screen from where I had him. This, of course, ends up killing me half the time and taking away from my score. I am going through the video options to see if that helps (Turning bloom off seemed to help a bit...) but the issue is still there.
It's possible that another application starts stealing CPU power. Check if there are no other apps running in the background, like i.e. AV scanner.
Another possibility is GPU overheating. Symphony does not have VSync option, which means it can easily render 300+ frames or even more, depending on your graphics card. If the game constantly uses full GPU power, the card may run too hot.
EDIT: Actually, you can turn VSync on in-game, my mistake.
