Really?
The only lads that can complain about performance are the 980 SLI lads. This is one of the prettiest games to ever have been released on PC. You need a 980 and a 120MHz monitor for smooth fps that averages around 55-60. If you run it with vsync at 60Mhz i agree, it runs pants. It was designed to be maxed out on the best hardware.
The lads with anything less will say how badly optimised it is. The 980 sli lads have a right to moan because they SHOULD be getting constant 60fps. As I understand though, the sli bug isnt fixed yet.
A lot of the beef is from lads who bought it on release. Early adopters who think every single game should be released perfect and never need a patch.
I've had it since 1.4. I think when you consider how stunning it is graphically, the scope of the game, and the fact they had to build the engine from the ground up for next gen, its hardly surprising it was borked.
I feel sorry for the programers and devs. Forced to rush a game out because of corporate pressure from the bigwigs. Dont hate on them, it wasn't their decision.