

I’ve got a fairly extensive Zigbee network (32 devices) - using a CC2652 USB stick hooked up to an rpi with socat connecting that to my HA VM. I have probably a dozen wired devices (in-wall switches, plug-in outlets, etc.) scattered between the two floors and even the wired devices occasionally fall off the mesh, while most of them (and about 50% of the wireless devices) are pretty robustly connected. I’ve found no real link between LQI/RSSI and a device’s stablity, nor have I found any real link between manufacturer and stability. Sonoff, Aqara, ewelink, lumi. It’s frustrating, because some of the devices that fail to stay connected are within 3 meters of either the hub or a wired device and report great signal strength. I just don’t feel that Zigbee is all that awesome for a robust low power network.
When I’m at the house next I might try moving the entire network to a different channel, as tedious as that is going to be.
I don’t know if that’s the (entire) story – the mesh is supposed to occasionally reroute based on the link quality of the individual nodes and the repeaters they can see.