Thanks for the replies.
It very well could be a problem with my Hub… its gotten worse since I engaged support on issues with motion sensors getting stuck in “motion”. The sporadic “support” seems to have led to my V2 Hub not being able to learn new zigbee devices (motion sensors, open/close sensors, multisensors, plugs to act as zigbee repeaters). Therefore I can’t improve my zigbee mesh in the house. Legacy devices were removed from my V1 Hub, and reset in the process of adding to my V2.
At the same time, I can add z-wave devices with no problem. Garage door openers, z-wave repeaters, motion sensors… all join my V2 Hub without a hitch. And network devices are fine also Arlo, Hue Hub…
The other night I powered on my V1 Hub, and the zigbee devices could be added with no problems… I can then move these to the farthest reaches of my house with no issues. So it doesn’t seem to be a crowded 2.4Ghz frequency issue… though there it is crowded with all the different devices running in the house. I may have to try that again and watch the Event List as I add devices (Z-wave and Zigbee) as a comparison to what events happen on the V2 Hub. The V1 Hub was rock-solid… which is why I chose to stick with ST and migrate to the V2 Hub.
I guess my next step is to re-engage support for troubleshooting… While I trust support, its unsettling that they can get into the device and alter the behavior of my Hub if thats the case.
In general, Z-wave seems to be winning in the protocol adoption… GE and Leviton come to mind. Really can’t get much bigger in my opinion in home electrical devices. My preference would be more wide spread adoption of Wi-Fi devices, but that doesn’t seem likely.