Well, after changing from Extreme to High, it's much better. I also disable two of the options that were originally disabled by default (but I then enabled them, so maybe that contribute to the stuttering). I still have AA on, but sometimes the characters (in particular my own PC) don't look so sharp around the hair, etc.
I also wish the cursor would move more fluidly. It moves fine on the main menu (just as the cursor does in Windows), but in the character screens it drags somewhat. There is also a couple second lag when opening the character screens (inventory, skills, etc.). All points against the quality of the game, but livable. So far no bugs that I know of, except
I did a quest that was marked as failed, even though I seemed to do it in a way that was a valid alternate method. The quest to get money from Keane for the merchant in the inn. I chose to side with Keane, then spoke to the merchant again, and it failed.
