I honestly wonder if there’s something going on with Hubitat as I seem to fielding a lot of these questions recently. @jeremykeen’s thread being the most recent one outside of yours.
As mentioned over at that thread, I experienced the same issues as you guys when trying to update everything – for fun, I went over to the Hubitat forum and found a lot of threads experiencing this issue too, and it’s not just Inovelli stuff failing, so it’s likely something on the HE side.
(this one was ultimately successful with S2 removed)
Anyway, not trying to place blame at all as at the end of the day, it could be our switch firmware, I’m honestly not sure. I’m not a Z-Wave expert when it comes to coding and implementation and there’s a ton of things we’ve discovered via the smart guys at Hubitat and also one of the other companies we white-label for about our own switches that we’ve improved on over the years. I used to think that if your product was Z-Wave Certified, it meant that everything should work flawlessly, but I’ve since figured out that was very naive and there’s different ways firmware can be implemented, which can cause small issues.
The guys at Hubitat are definitely pushing the boundaries in terms of what Z-Wave can do and have been one of the leaders in Z-Wave innovation for some time now.
How far is your furthest switch from your Mac?
I have a MacBook that I run Parallels on and while I can technically move it, I haven’t had to luckily because my house isn’t that big and I’m typically in the middle of the house where the MacBook is docked (the USB stick is in my monitor as of course Apple got rid of USB ports on the MacBook lol).