Addressing those split second freezes:
It could be quit a few things,
Are you getting the disconnect symbol?
What's your minimum frame rate during that instance?
What resolution are you running at?
What are your card and cpu temperatures at load?
No disconnect symbol.
30fps minimum 45fps seems to be the average on the normal settings. We can get them higher 60fps or more it'll still freeze/locks up for a split second.
Medium settings at 1920 by 1080 running it on our 40" lcd tv
I'll have to double check temperatures i think around the 60-65 degree mark on the cpu and as high as 70-75 on the gpu.
Evil i've had a quick scan thorugh that tweaking guide, a lot of the stuff we have tried already, apart from some of the console changes like view distance etc. i'll go through it again in more detail.
This system is very clean very few programs on it it purely for running crysis and other games, i'm just baffled as to what is causing this.