I found a website call fixmylag.com. I was hesistant at first, but it turns out to be legit and I have been running the program while playing Diablo for 2 hours now with no hitch in gameplay at all. SMOOTHE AGAIN!!! It does cost money to download the program, but $30 for 3 months seems worth it to me. The program also allows you to use it on PS3 and XBOX systems. So you can get more bang for your buck if you are experiencing lag issues.