Metal Gear Solid: Peace Walker

[walle]

Replying based on your edit: Did you install the 300/400 MByte data install? It's required for the codec voices to have sound..

No I didn't, thanks... I will do it now, will it fix the cracking sound?


Edit: thank you very much, I installed the full package and radio is working, but the sound is still cracking, it's annoying and it hurts your ears... Do you have the cracking too?
edit2: yeah it's evne cracking in the cutscenes, it becomes almost unbearable... any fix to this please?

win7 x64
4 GB RAM
Nvidia 410M
i3

I think I have FPS 21 with default options (I know it's too little but it's not as slow as you may think, it's playable)

Could this be from my graphic card? Not enough? Or the program?