The game might be running on integrated graphics instead of your dedicated GPU. Solution: Go to Windows Settings → System → Display → Graphics Settings → Add ForzaHorizon4.exe → Set to "High Performance" (your NVIDIA/AMD GPU).
A significant portion of searches for "Forza Horizon 4 Setup Exe Download" comes from users looking to bypass purchasing the game. It is crucial to understand the reality of downloading standalone executables from file-hosting sites, torrents, or "warez" forums. Forza Horizon 4 Setup Exe Download
