Isn't that curve a bit tight for that distance? It makes sense as an immersive, close monitor, but if you have it far away behind a wheel, it's going to be distorted.
I have an Odyssey g9 and it has a 1000R curve - and sits about 3 feet from my face and that feels about right. At a guess - at 800R it is a bit too tight to sit far enough away to have a proper wheel and such in between you and the display.