I have not played the single player side of it but the multiplayer is smoother than Ghost's in terms of running it but the Peer To Peer server system has already killed, the game for me as the lag is just hideous.
I also cannot run it at 1080p, 1440p, 1600p or 4k at anything above 60fps unless I turn it all the way down to medium and the AA and HBAO off completly, and that is even with a overclock on my 3930k and a overclock on both my GTX780Ti's, I also took off the overclocks in case it didn't like it and the frame rate was just as bad.
Going to give the campaign a try now and see what that performs like.