I've read all the posts and so far the definition of stutter/micro/hard etc freeze seems as nebulous as the source of the problem.
Something I haven't seen mention is the hard video freezes like I get. The VR view reverts to a 2d box, the throttle goes to zero (and maybe some other controls, or trim), and sometimes if I had been using a hat view at the time the view will be stuck until that hat position is pushed and released again. A control has to be moved to reactivate them. It may occur at any time, but most frequently while approaching the larger bases.
So I take it to be helpful I need to get the DX file, record film and also NVIDIA Shadowplay at same time.
Does the AH film record the USB controller(ssssss...) data also? Seems to be a correlation there.