Well, about the performance, if you have a good PC, the performance is not that bad at all. I run all at max settings now, and all looks good, feels good, and drives smoothly. I assume that the guys @ ISI have decent computers, so during testing, they probably had good looks and feels.
Besides that, keep in mind that not all graphical items are implemented yet. It's basicly a stripped down version of what it will be in the end.
It's just so far from being a "polished" sim right now I've told a couple of friends to wait on getting it.
Finally, a sensible thought! If you are NOT a modder, or are a Race Administrator who wants to get familiar with the principles, and NOT want to help testing, but are looking for a new sim, do NOT buy RF2 yet. It's as simple as that. It's BETA, and there is a reason for it being BETA.
Accept it, and wait till it's finished.
I personaly enjoy the testing part, so I love the game. But my judgement is based on ALL facts, and not just what I would like it to be