Horizon 1 is known to have "black ground" textures or flickering on older versions of Xenia. Ensure you use the "Xenia Canary" build for the best patches and fixes.
If you've downloaded a highly compressed version, you'll likely need to: Forza Horizon 1 Pc Download Highly Compressed
These features can be used to describe the "Forza Horizon 1 PC Download Highly Compressed" and provide players with an idea of what to expect from the game. Horizon 1 is known to have "black ground"