FWIW, an observation from @mike brings to bear how a malfunctioning, or possibly under-powered, device can cripple the hub.
@iharyadi reported a similar experience that was traced down to a Bosch motion sensor. Two posts after that @mike indicated that removing four sensors from his zigbee network restored stability.
Which brings to bear two things vis-a-vis hub stability/reliability:
- The device that displays instability or drops off may not be the one that initiates/causes the problem.
- I don't know if it is possible, but I wish that future platform versions would have some mechanism to stop responding to malfunctioning devices.
Edit - another "lesson" is that battery reporting is not reliable. It might be better to replace batteries on a regular annual schedule.
