Turn MSAA Off . This is one of the most demanding settings in the game. Use FXAA On instead for a low-cost solution that smooths edges without a major performance hit.
Adjusting these specific settings offers the best balance between visual quality and a significant FPS increase: GTA 5 FPS Boost For Gaming 2023 Guide
Go to your Windows Power Options and select the Ultimate Performance or High Performance plan to ensure your hardware isn't throttled. Turn MSAA Off
Ensure your system is ready to prioritize the game's resources: GTA 5 FPS Boost For Gaming 2023 Guide
Set to High or Very High . This controls motion blur and bloom; lowering it from Ultra can gain you roughly 7–8 FPS. Advanced Performance Tweaks