Like the title says.
I would change how choppy and not smooth the casting and animations get. I do not know what the source of this is, but that would make this game 50% more enjoyable for me. This is something WoW is amazing at, and i feel SWTOR would be better than wow if this issue was fixed. Again im not sure what the problem is, but damn it would be kick *** if it could be fixed. It has to be a server or code issue as this has been a complaint since SWTOR came out.