through the manager. You must always launch the game through Frosty for the mods to be active. Additional resources for Need for Speed Rivals modding: Essential Patches Performance Guides Community Discussions Core Game Improvements Brawltendo's Framerate Unlocker (GitHub)
Since the game is famously locked at 30 FPS, many players use a mod or launch command to unlock 60+ FPS . If you use a mod menu to increase the speed, be aware that this can sometimes break the game's physics if not handled correctly. Need For Speed Rivals Mod Menu Pc