Not that I'm aware of, it seems to use the radio 0-0-...for it's comm., but it's a heavily scripted misson.
As far as frame drops, I don't have anything to monitor my fps, but I do not notice any stutter or slow downs...I have a pretty beast of a PC running 4 way sli. @3.5ghz but this Arma so I do get drops but not in this case