Z-Wave-JS-UI loses connection to USB Stick

My Z-Wave stick keeps falling offline. Every couple of hours my Z-Wave quits working. Whenever a command is attempted to be sent through Z-Wave, the message below appears:
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When I go to the Z-Wave JS tab, the top of the page show this message for the stick’s status:
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Restarting HA does nothing for the problem, but a reboot of the Z-Wave either using the “restart” at the top right of the Z-Wave page will fix the problem as will restarting from the HA Add-ons menu.

I am running HA on an Intel NUC running Proxmox. Inside Proxmox the Z-Wave stick is setup in the Hardware>USB Device section:

This problem just began over the last weekend while I was out of town. It has been running flawlessly for over a year.

I am using a Zooz ZST39 stick, on an extension, away from the computer, and on a powered USB hub.

When I restart the Z-Wave, it also randomly turns on lights that weren’t on before.

Does anyone have any suggestions?

How many devices do you have in your network?
Mine started to randomly act like that when I exceeded the number of c.a. 90-100 devices in the network.
Unplugging and plugging the stick manually solves problem for some time, but it tends to go back

  1. But I restored my Z-Wave-JS-UI to the previous version and that solved the problem. I don’t think it was a problem with the new version, but a problem with the installation. Everything is working fine now.

I spoke too soon. My problem isn’t fixed. It is as long as I don’t update my Z-Wave-JS-UI add-on. I just updated to 10.2.0 this morning. When I returned this afternoon, my entire Z-Wave network was offline again. Just like before, as soon as I restart the Z-Wave-JS-UI, everything works for a while. Then it’ll go offline again exactly the same way it was before.

I had to completely uninstall my Z-Wave-JS-UI instance, reinstall it, wait for all the devices to be re-integrated, and re-add some devices that wouldn’t find their way back into the network. It’s a complete PITA, so much so that I can’t do this every time there’s an update.

I don’t know if it’s a problem with HA, Z-Wave-JS-UI, or even Proxmox that my HA runs on.

Does anyone have any wisdom that could help my situation?