Use or your graphics card control panel (NVIDIA Control Panel / AMD Radeon Software) to strictly cap the game's maximum frame rate to 60 FPS or 90 FPS .
What (NVIDIA, AMD, or Intel) are you currently using? gta iv pro fixer
Even after installing the bug fixes, GTA IV has a notorious stutter problem caused by how it handles DirectX 9 and asset streaming. The solution is . Use or your graphics card control panel (NVIDIA
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Grand Theft Auto IV Pro Fixer: The Ultimate Guide to PC Optimization and Error Correction
To prevent physics bugs—such as the infamous final mission helicopter glitch where you cannot climb inside—you must cap your frame rate.