In this first update, I fixed the ghost plane that were floating above the track, as well as the white line for the pit exit at the top of Raidillon.
I also fixed the grass for people who are not using GrassFX with CSP. After seeing some people playing without GrassFX, which leads to horrendous results and not proper shading. I decided to remove altogether the original grass 3D mesh. While not ideal, the result is better and I assume people should be using CSP GrassFX at this stage.