So, I have all the recommended specs for GTA IV:

• Windows 7 Home Premium 64bit
• AMD FX-4100 Quad core at 3.6GHz
• 8GB of RAM
• Radeon HD6450 512MB

More than enough to run the game, but whenever I load it up it will stutter every time I press a button or move the mouse.

Any answers would be much appreciated.

3

2 Answers

Run the game as Administrator.

Also, I had such issue due to the DVD security from GTA.

Since GTA IV is a fairly CPU heavy game, check if it's using all the cores. While the game is running, alt-tab out, then go to Task Manager -> Processes -> GrandTheftAutoIV.exe -> affinity.