Psychedelic track colours error

I was changing a few pretty basic graphic settings in-game and also on nvidia inspector - and this happened:
wa

It only seems to happen on the new DLC tracks- Brans Hatch, Imola, etc.

Now even after reverting to my former settings, and restarting, and reinstalling my graphics driver,the psychedelic tracks remain.
Please help!

 

I had the same, launch AMS config do a sweetfx preview then OK exit and tracks now back to normal.