Look at WoW, it balances all around PvP. You just gotta roll with the punches. I wish balances were only around PvE, but the reality of it is there are a lot of people who enjoy PvP.
It's bound to happen. And if it does hurt operative dps as much as everyone is saying, they'll be making changes. This is an MMO, you have to expect class changes all the time. Good or bad.
It is entirely possible. There could be easily be issues with ATI drivers. And that's honestly what it looks like. ATI cards are having problems. Stop acting like you know everything.