Sidehistorik
...
So I am back to the solution with Node-RED.
Conclusion
My only kind of conclosion is that the Hue interface in the ZenseBox is not working well, but that seems somewhat "farfetched" ...
Some of the "hanging" can for sure be pinpoint to the fact that the ZenseHome switches are + 10 years old - but there stille a significantly improvement going aound the Home Assistant (Nore-RED) path.
Another option that I not have tested, i using the Hue palette (Plug in) for Node-RED.