A 100% save file has bypassed the game's progression system entirely. Using it gives you immediate access to all the content that would take hundreds of hours to unlock, offering benefits such as:
Codex saves are tied to a specific Steam AppID (Forza Horizon 5's ID is ) and the Codex user ID (usually 292733975 ). Press Windows Key + R to open the Run dialog box. Type %Public%\Documents\Steam\CODEX\1551360\ and hit Enter. Forza Horizon 5 Codex Save Game 100 BEST