I voted 8-10. I would have to wait till the game is released and all the little things fixed by TWI are done... of which I am positive TWI will be doing.
Quite honestly the game runs better than I would have anticipated on my system which is nearly 4 years old. I get halfway decent fps on high settings, 90 FOV, 1920 x 1080. Much of the lagginess that I currently experience, when I actually do, can be attributed most likely to overstressed servers or me trying to run settings higher than I probably should. Other things I'm sure will be fixed by TWI by release date or soon afterwards.
Gameplay should be fairly decent, but the final say will be after the game is released.