Also something I probably should have mentioned about getting 5 instances to run at a nice frame rate. I am using ISBoxer (which I would happily recommend). I am currently running a 5 instances at the recommended resolution (which is 1600x900 - the res of my primary monitor). I tried reducing the resolution setting in ISBoxer to increase the frame rate but it made the pictures all look really blocky. I have run the game single instance at those lower resolutions before without it looking like that so I am guessing its something to do with ISBoxer.