Zordana, to be safe yes do it. I've also read that it reduced performance even when it didn't kill hardware.
I think 314 is safe from what I read.
It aparently is only affecting 3% of all cards with the driver installed, but that's pretty high (3 in 100). So yeah, roll back immediately.
Also about your first statement, it's not killing us, it's just that we think it's going to hurt the game as a whole and make it less than it could have been, for everybody. Limiting the gpu effects to simple particle things and wibbly wobbly glows.