I5 6600K 3,9Ghz, GTX 980 Ti, maxed settings, replays and all-no problems for me, not even a stutter, sometimes slows down when "doomsday" off-map kind of abilities are used, other then that, smooth gameplay without any noticeable performance issues.
Previously played on Radeon 7700HD without any issues, but on medium settings.
2v2 games.
Never really had any of these "poor optimization issues" people keep talking about except for a couple of random CTDs.
