The Fox Engine ties specific game calculations to the frame rate. In the world of game development, this is a common practice for console-focused engines. On consoles (PS3, PS4, Xbox 360, Xbox One), the target framerate is a stable 30 or 60, so the developers hardcoded the physics simulations to run in step with the rendering.
Open the .ini file that came with the mod (e.g., fps_limit_fix.ini ) using Notepad. Here you can adjust the settings. metal gear solid 5 phantom pain fps unlock
This is the biggest practical issue. Metal Gear Solid V has dozens of long, cinematic cutscenes. These cutscenes are pre-baked to run at 60 FPS. If you unlock your frame rate, cutscenes will attempt to run at 144 FPS or higher. Because audio playback is tied to real-time, not frames, you will experience a "fast-forward" effect where the video plays back 2x or 3x faster than the audio, completely ruining the narrative experience. The Fox Engine ties specific game calculations to
FPS is standard for many, the modern PC gaming landscape demands more. Open the
If you change any graphics settings in-game later, the game will reset this file to "Auto". To prevent this, you can right-click the file and set it to Read-Only , but remember you'll have to uncheck that if you want to change your resolution or textures later. Is it Worth the Risk?
This mod does more than just turn off the limiter; it introduces a dynamic adjustment to the game's internal clock. It tricks the engine into thinking it is running at 60FPS while allowing it to render frames at much higher counts. This ensures that the game logic (movement speed, physics) remains correct while the visuals become buttery smooth.