I joined up to this and this is what I will say.
Graphics : Inconsistant, mid ohio looks pretty nice, where as the UK country road type track I drove on looked aweful, the cars look decent but nothing when you compare it to modern big name titles.
Sounds : I only drove the EvoX (this is the only available car), but it sounded pretty good, though I will say it had a lot of transmission whine for a road car.
Controls/FFB : The game didn't like 900 degrees, I had to lower it to 400 to get it driveable but it felt good there. The FFB had a ridiculous ammount of settings, half of which made no sense to me, it generally felt quite jittery and rough with a bit of deadzone in the middle (not deadzone in control, but lack of any FFB in the small area where the wheel is centered). Controls/FFB are not great but it feels miles better than CARS does, pretty decent tho I would expect a lot of improvement is needed.
Physics : I couldnt get this Evo X to go sideways without using the handbrake (which was way over the top when I did), the car feels good and is very enjoyable when you get into it but It felt very understeery and reacted in strange ways, It annoyed me that I could not get the car to oversteer in any way, when I see Jeremy Clarkson drifting the real car with 1 finger ^^. It definitely feels like a proper sim, but it is definitely lacking in a few areas. I like it though, the driving model is very enjoyable to drive when you get into the swing of it. It won't be knocking iRacing or NetKar off the physics throne.
Interface : I don't know if this is a telling sign but, the options menu (specifically the controller settings and mapping) are near identical to Rfactor (even in the namings and position within the list), and even the graphics have an Rfactor ish look about them in game. Something about this game feels very Rfactor ish.
I like it, I'l probably play it a bit, though I wish I could work out how I get extra cars, and also why I see videos of a Mclaren MP4-12c even though its not available in game to use nor purchase.