Thanks for your answer.
A pitty.
I started a threat about this subject:
I do have a good mesh.
I’m migraiting from Homey to HA.
In Homey it was working fine.
I had the same setup.
And the same flows.
So I’m quit frustrated that it is not reliable.
It looks like my traffic is not that heavy.
I just think: I still have Homey running. having it’s own zwave.
Can it be inferencing each other?