It's not just an "occasional stutter" though for me; I get split second freezes during combat and framerate dips to 3-5 fps within the first few minutes of play which render the game almost unplayable. Even when that eases off and performane stablilises I still see lots of rubber-banding, usually my character appears to "jerk" backward when running forward, even outside of combat (so it's not a knockback for example). For me, the game's performance is ruined by unacceptable levels of server lag that make it feel like I'm playing it on a massively underspecced system, which it obviously isn't. I could complain to Blizzard about it again but they've already pretty much ignored one support ticket which mentioned the poor performance so I doubt that they'll ever fix it. They won't care anyway as they already have the money from over 6 million sales.