On your suggestion about the 570 101a not having the vid_get_viewport_live_fb() functon implemented, I went thru the dumping and running diff_batt. Got identical results with your results posted in a different thread. I copied the function from the 100e branch and compiled and ran it on a 101a camera. Got a 50-60 ms improvement with your Fast MD script.
What can I do now to get the improvement into trunk?
Thanks! It's in trunk 766 now. Please test MD and zebra (zebra in rec and play modes).