The vast majority of cars, tracks, and UI add-ons released in the last two years assume 1163 as the minimum version. Running anything older results in missing textures, broken animations, or outright crashes.
You don’t need to downgrade your entire game. You need to trick the mod into thinking it’s 2015. assetto corsa is obsolete v1163 is required fix
: Open Content Manager, go to Settings > Custom Shaders Patch > About & Updates , and select a different version or click "reinstall current". The vast majority of cars, tracks, and UI