Cool, thanks for the advice. I couldn't believe how much difference 1.2 made over 1.0, it made it loads better for seeing corners that were a long way off in the distance.
The rest of my system is a 6700k @4.2 GHz, 16 Gb RA and a 1070, runs pretty well and I've only once noticed a weird framerate drop. I don't know what the fps is but it feels high enough to be perfectly playable.
One other thing, is there a way to turn the virtual mirror off? It really bugs me it being there when you have a mirror in the car anyway. I like all the other features such as the track corner thingy and the other bits of the HUD but the virtual mirror is so ridiculously pointless. Either you have it in the car already, or if the car doesn't have a rear view mirror...then a virtual one isn't realistic is it!