I've just tested AC with Ferrari 478 @ Magione. Of course, due to my current situation when I don't have a desktop monitor and I'm forced to plug my pc to TV monitor, I have no capabilities to mount my wheel, so I tested AC with my joystick. TC and ABS were on, obviously, cos otherwise I wouldn't have done any single lap.
The first impression - wow. Graphics of Ferrari's interior is superb. The sounds of the engine is epic and that handling is such a joy. Big Kudos to Kunos guys for optimization. I do wonder if that just me only or not that finds this AC way better optimized and actually well optimized. I mean, I even can play with very high settings on medium-end GPU HD7850 and get avg. 60 fps, which is fine (previously, on Tech Preview I would have got maybe 30-40 fps or even less). I drove with vsync OFF, 'cos I've been reading previously on AC forum about vsync thing which is one of the most endless topics and I got confused, is it worth to be turned on or not, so I remained it on default - which is OFF. I can't make my statement on input lag, related to steering wheel, basically, 'cos I didn't use steering wheel, as I said previously. So, I don't know.
To sum up, basically I wasn't that shocked when I turned on AC, 'cos I've tried Tech Preview previously, but I was really nicely impressed with its optimization.