Delete the dxgi.dll file from your Assetto Corsa root folder to force a clean slate for the shaders. Method 3: Verify Steam Integrity
(released by Kunos Simulazioni). If a mod, car, track, or online server checks your game version and finds anything lower (e.g., 1.16.0, 1.15), or if your executable is modified/cracked/outdated, you will see a variation of: assetto corsa is obsolete v1.16.3 is required fix
Navigate to your (usually found at C:\Program Files (x86)\Steam\steamapps\common\assettocorsa ). Locate the file named changelog.txt . Delete the dxgi