getting temp from 8 to for example 22 by dashboard is not user friendly 
I know but for testing its adding in something else, you could do it on the device page
That work ok then?
yes, but not every time temp is changed
Not a driver issue, mesh issue or interference,
The driver is asking and either the message isn't getting to the trv or the response isn't getting back to hub.
Disable all but 1 device and see, but to me its a z-wave mesh issue, you need a powerd device near and then do a repair.
Do you have other z- wave devices working OK?
every driver that i have tested with polling causes such zwave not responding.
all zwave device are not responding.
i have got small apartment and two range extenders so i do not think its mesh issue.
i have done zwave repair.
the only driver that is not causing zwave death is with polling disabled.
How many apps or devices do you have which are WiFi or uses the Internet?
none i suppose 
How many other z-wave devices?
about 20 in this 4 trvs, 2 zwave exteneders
Power reporting devices?
If so turn the report do to at least 50% power change, this will allow your hub to cope better.
Its a HE system problem until they fix it the only thing we can do is reduce chatter on the system
what do You mean by power reporting devices?
Any device which report power or energy usage like plugs or some dimmer models
I do not have such devices
With limited information i can't advise.
Mine works fine as is
So you are using the Spirits with your driver successfully in Europe?
Sounds like it's a mesh issue for me.. All devices dropped after performing a zwave repair
Yea works fine, I always do a reboot after a z-wave repair, the is a hub issue when using an external stick
