Hey All,
I am having exactly the same issue as Yoshi. My new laptop is W8 and is having the same problems with laggy combat and actions. The world renders fine, with no lag in cities, chat, auction house, etc. There is a one second delay after hitting an action button before the action happens, and enemies in combat “teleport” around. I can walk into the next room and run the game on my Win7 desktop just fine, and on the two other Win7 laptops in the house as well. I hope they patch this soon. I didn’t buy my laptop for gaming, but it sure would be nice to have the option.