Actually, it's performing way better than AC, it's just riddled with bugs so it keeps crashing. They're working on it though.
FPS is smoother than it's ever been, since they've actively been fixing the server CPU bottleneck. Turns out your hardware can run the game just fine, the reason it ran like dogshit (for me anyway, locked to 15fps after awhile) is because of the CPU taxing one core via server requests. They've still got work to do, but this is the result so far (until he crashes).
This is what it's like on a fresh server (a few patches ago without all the bottleneck improvements)
Note all of this is running WAAAAAAAAYYYYYYYYYYYYYYYYYYYY smoother than the Citizen Con demos, and not even running on Titan X's and shit, the first vid up there is on a 970, which is my GPU. And SLI is still not even implemented to work (being worked on tho).