Grand Theft Auto IV: The Lost and Damned

Optimization Tips

• The game engine is notoriously poorly optimized for modern multi-core CPUs and high refresh rates.
• Cap the frame rate to 60 FPS to prevent physics engine glitches and stuttering.
• Use the commandline.txt file to force higher resource usage if the game detects low VRAM.
• Disable VSync in-game and use driver-level VSync to reduce input lag.
• Install the FusionFix mod to resolve modern resolution and aspect ratio issues.