Moves on IPCB Fader very jerky

Friends,

I had this always with Hog II and also Hog III:
I record a blind position (all spots facing the audience) on a Fader and make this fader IPCB.
Now I have a couple of other positions on a seperate cuelist which make my stage looks.
Now when I use the IPCB Fader to slowly fade the lights towards the audience. This works, BUT the move is extremely jerky, looks like 4bit or something like that.
Of course I understand that the way of the fader is at least the fadetime, but if i would do this move with 4 secs it looks smooth as it should, if I do it by hand it is jerky like hell.
Same happens when I bring in my moving effects via IPCB, still very jerky.

is there any way to make this a bit smoother? I played around a bit with pathes, but did not found any difference to the standard path.

Any ideas appreciated.

Best
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