ZST39 LR going unresponsive after a day or so

Only starts working reliably after a complete shutdown of the host Home Assistant. 35 devices on the network. ZST39 was just bought. I replaced the old one just to make sure I had the latest firmware / SDK then rebuilt the network. Once problem starts it toggles between online and unresponsive every few seconds until I shutdown home assistant. Pattern is “unresponsive” for 5.22 seconds then “ready” for 24.78 seconds. Regular, continuous.

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