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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.

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have you installed all the latest drivers? what other programs are running in the background? have you tried lowering/changing the graphic-settings? some more information would be really useful... –  oezi Jan 3 '12 at 10:55
If you could post your current game settings, that would help a lot in identifying the issue. –  Lemmings19 Feb 17 '12 at 3:36
See the PC Gaming Wiki - GTA IV article. –  galacticninja Nov 28 '12 at 7:10
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migrated from superuser.com Jan 3 '12 at 9:27

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2 Answers

Run the game as Administrator.

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

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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.

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