About a 3rd of the clips are slowed down mainly to work with the timeline, a couple of the climbs are real time and I was pretty happy with the stability but the yawing is something I would like to iron out. I flew mainly in GPS mode as the wind was a problem at certain heights/positions which meant it was a real handful with GPS switched off but I am not sure the regular swinging from left to right is GPS mode correcting as its a few degrees only.
I will have to test in an open area with GPS mode off and see whether it does the same thing.
Anyway, thanks for your comments.