Pro Tools 11 hangs every minute or so for 30 seconds

Help!!



My session just hangs on PT 11.0.2 for like 40 seconds every minute or so.

I can't do anything - and then it just comes out of that state as if nothing happens... WTF ?



I loaded a video to the session, and then removed it, thinking that may have caused the hang up. It's not. I also disabled the video engine.



I should note there are very few tracks (2 stereo, 1 mono audio tracks, 1 midi)



anyone ?



Thanks!!!