The most significant change is the rewrite of the D3D12 memory heap allocation. Previously (1.465.282), the game would cache weather textures indefinitely. Build 1.478.564 introduces a "cyclic texture purge" that activates every 15 minutes during free-roam.
Without official notes, the community data-mined and stress-tested the update. The consensus findings fall into four categories: Forza Horizon 4 update 1.465.282 - 1.478.564 -E...
The UDP packet protocol has been rolled back to a hybrid of the 1.460.xxx era code. This resolves the "Convoy teleporting" glitch. The most significant change is the rewrite of