Are there seriously people in this thread implying that a BOTTLENECK is the issue in a scenario, where a game which is fairly well optimised is performing this bad? A 2600k still works very well for all games on 1080p, unless its something specifically cpu-intensive. OP, are you having performance trouble in other games? Or is it this specific one?
Yep we are.. https://www.youtube.com/watch?v=K9EJNa0y524