Have you tried this >
In-game settings:
1- Turn off HDR and Motion Blur (both options are causing that blurry aspect);
2- Set Anisostropic Filtering to 2x (it's VERY resource intensive on this game, don't know why);
3- Set Shadows to High and AA to 4x;
4- Turn off Vertical Sync (use NVIDIA Inspector's one instead);
5- Turn off "Lock Onboard Camera to Horizon";
6- Set Cubemap Resolution to Low (very resource intensive) and Faces per Frame to 6 (for real-time car reflections);
http://steamcommunity.com/app/244210/discussions/0/666825525296642878/