Anyone got temperature control reliably working in free@home?

I am trying to get room temperature controllers to reliably work but - it feels - this entire functionality is beyond broken or poorly designed in free@home.

So for context our setup:

• Bottom floor, warm water floor heating. We use a heating actor to close/open the valves to regulate whether water flows through or not. The temperature is measured by a SmartTouch 10" panel in the living room.
• Second floor, radiators, and each radiator is equiped with a Busch Jaeger radiator thermostat measuring temperature in each room.
• We use an 2/2 actor to provide the boiler with a heating signal; one for the warm water floor heating, one for the radiators on the second floor.

The idea behind; if we put on the fireplace on the bottom floor we still want to enable heating the rooms on the top floor. When this happens, the SmartTouch panel will not provide a "boiler heating" signal, the valves remain closed and the boiler is not getting a signal to heat the water. On the top floor one or multiple of the radiators however can still give a "boiler heating" signal and the boiler will turn on, heated water will flow through the radiators but the valves on the bottom floor remain closed (SmartTouch did not trigger them).

Unfortunately you need two separate actors for this scenario instead of being able to link all thermostats to a single actor. One that is triggered by the SmartTouch temperature control; the actor is set to "central heating" and the other one is set as an on/off switch.

SmartTouch triggers the boiler actor (central heating actuator) and the valves on the heating actor

Boiler actor provides a "heat" signal to the boilet. First actor is set to "central heating actuator" and the second is set to "on/off switch"

*To trigger the boiler actor from the radiator thermostats an action is used. There is no way in free@home to link with the existing central heating actor *

Unfortunately what happens is

*The room temperature controller keeps heating despite the measured temperature being much higher than the set temperature. *

In addition none of the configured actions are actually being triggered or executed. As a result the radiator thermostats are not triggering the boiler actor and thus not resulting in the boiler turning on.

I was hoping other users had faced similar challenged and I was hoping to learn more about their setup or experience. Currently I feel the free@home is quite poorly designed - e.g. not being able to simply link all radiators to the central heating actor and requiring workarounds through the use of actions is quite a fundamental design flaw.