The only problem I can point out is that there is no way to lower Quality (or at least I haven't been able to find a way). It was fine until the second level, where I found myself having to cease fire just to have an idea wherethe enemies are, as when I shot, everything, well, lagged. I've been trying to aviod saying that, but yes there was lag. But i think a Quality control button - or anything of the sort - will be enough to remedy this situation. It's still a good game though!