The only complaint I can muster is the occasional frame drop or v-sync tearing, but these are easily overlooked with this game. The frame issues seem to only plague a few different missions. When I first saw it, I thought "uh oh" and I quit the mission I was on. I played through a different one and then went back to where I was and the stuttering was gone.
With having such a connection to the devs as we do on this forum, I'd be interested to know why such drops were randomly occuring.
Is it streaming/loading textures?
Nature of the randomized AI?
Nature of the randomized camera for zoom pans on action sequences?
Any thoughts DeanoC or nAo?