Forum is also full of people playing just fineNo it isn't. The forums for Turn 10 is full of people having problems.
Sure some peoople are "running" the game but having to cap it at 30fps because of sporadic frame drops, doing a bunch of workarounds and fixes to get it playable, frame pacing issues, micro stuttering and whatnot it's clear that the game isn't up to snuff(and this is from people with even more powerful rigs.)
I'm not playing it because the biggest problem right now for me is there's a significant input lag issue. The controls feel terrible like everything feels like it's 1/2 second late or worse. It's unplayable for me. Cars feels like tanks.