Thanks again. But I think you got me a little wrong.
Sorry about that.

I mean the A/P behaviour when it is in VOR/LOC mode.
It is struggling to follow a radial of a VOR,
I have not flown a VOR to VOR flight so I would have to see if mine does it.

in Auto G/S-mode it also "swinging" a lot while following the localiser.
I've never had that happen. I have no problems (no swinging) with tracking the LOC and GS nicely on approach. It could be that you are too heavy and/or too slow on approach.

Mark