1. Manually I go as far as good I can, regularly HFR 1,2-1,4 and then start Auto Focus.
2. Iterration 1: 40+ stars found across the circle
3. Iterration 2: 20 stars found only on one side of the circle
4. Iterration 3: 5 stars found, 3 on the right, 1 on the top and 1 at the bottom
(Tried multiple steps from 100 till 10.)
I can see that on the the 1st pass went down for example to HFR 1.2, but then - cause it looses all those stars - the calculation changes and increases.
So when it finally says done after 20 Iterrations, there are only 5-6 stars with HFR 2+
Update: As it seems the "Out Step Multiple" has a great impact - at least for my setup and workflow. I remember that I've lowered it to 2, hoping for quicker result.
As soon as I got it back to 5, everything works just fine