I just bought this game and it's unplayable. Everything I play on my PC setup has no problem at max settings, Starcraft II, Leage of Legends, Skyrim, World of Warcraft but Diablo III runs like I'm playing it on a single core processor with 512 RAM. What's going on here?!?!?!?

RAM = 8gb
i7 950 Bloomfield Quad Core 3.02 ghz OC @ 4.01 ghz
Asus Sabertooth X58 mobo
Edited by Acidflux#1627 on 3/22/2013 4:27 PM PDT