Updating your Graphics Card Drivers to Fix Lag in GTA 5.Best Settings for GTA 5 Lag Fix and Boost FPS.Installing FPS and Stability Booster Mod.First, implement each method and then try playing the game to compare the before and after optimized FPS. 8 Best Ways to Fix GTA 5 Lag in Low-End PCīelow are some of the quick yet simple ways which you can try to fix lag in GTA 5 and reduce shuttering in the game. Video Card: NVIDIA 9800 GT 1GB / AMD HD 4870 1GBĮven if you meet with the minimum requirements for GTA 5, you will experience lag while playing it.Processor: Intel Core 2 Quad CPU Q6600 2.40GHz (4 CPUs) / AMD Phenom 9850 Quad-Core Processor (4 CPUs) 2.5GHz.Below are the minimum requirements officially declared by Rockstar to run GTA 5. Your system must meet the minimum requirements to run GTA 5. GTA 5 Steam Launch Commands for Low-End PC:.Updating your Graphics Card Drivers to Fix Lag in GTA 5 Best Settings for GTA 5 Lag Fix and Boost FPS