Tagged for when I get home and can watch it...
This game is running pretty well for me, strangely.
It came free with a recently purchased 970 Strix (which I would have bought without the Batman offer).
970, 3470, 16GB, game installed on a WDBlack, at 1900x1200. I realized yesterday that the game had defaulted to all Gameworks options being *off*, so I switched them all *on* and expected the worst, but it didn't degrade performance in the least.
I get occasional short hitches, usually when doing the grapple launch move. No 1 second + pauses, Batmobile issues, memory leaks (that I've noticed, although I haven't monitored) or game breaking stuff...yet.