Yeah, I've tried that video. I've done that, still have mouse lag. I've also done most of that, I don't think I set the texture quality to high though. Thanks for the input guys. I'll give all these the run over and double check that I did everything. EDIT: Also, I've been seeing people saying that you should make sure that it's using each of the CPU's available, but, whenever I look for the CPUCount=# thing I can never find it. Exactly where is it?