Unstable Z-Wave since 2.3.X upgrade

[bobbyD]

@Bullfrog

appear to come in waves - nothing will work at all for 5 minutes or so and then suddenly, things will start working again.

If no devices are working at all, then some (all) start working it could be that devices in your system are demanding too much Z-Wave bandwidth. It takes a few misbehaving devices to bring your mesh to its knees. Check this post for more details:

Dos and Don'ts of Z-Wave Power Reporting (repost)

Have you noticed automation slowdowns or even Z-Wave devices that aren’t firing at all? It is likely that one (or more) devices in your system are demanding too much Z-Wave bandwidth. One of the biggest bandwidth hogs is unnecessary power reporting. Let’s take a look at Z-Wave bandwidth constraints and how you can reduce or eliminate issues caused by power reporting. The Z-Wave radio in your Hubitat Elevation hub is designed with more than enough bandwidth to handle your day-to-day automations …