Yeah actually I remembered I had set the prescale to 2 as I was just trying out different settings to see what might the problem be. I reset it back to 1 and much better performance.
So question ... got any cool presets that I could use for something like Donkey Kong?
Second question .. if you do, what should I do with them? Should I take them and manually set them in dkong or can I add it to an ini file specifically for this game or something? Would I have to reset it every time?