Navigate to \ForzaHorizon4\media\UI\Videos. The intro and showcase videos are often stored in 4K. Deleting or replacing these with blank files can save 3-5 GB.
Yes. If you own the game legally on Steam or the Microsoft Store, you can reduce its footprint without piracy: Forza Horizon 4 Highly Compressed Pc Game Download
Most repacks automatically apply a crack (usually via files like steam_api64.dll or a CODEX/EMPRESS folder). If the game asks for a Steam key after installation, manually copy the crack files from the _Crack folder into the game directory. Navigate to \ForzaHorizon4\media\UI\Videos
The Horizon franchise is built on shared-world gameplay. In a cracked compressed version, you will not see other players. The "Forzathon" live events, custom liveries shared by the community, and the auction house are all disabled. You are playing a ghost town. The Horizon franchise is built on shared-world gameplay
This is usually due to: