For what it’s worth Z/IP has ben awful for me for years. Over time devices would always lock up, stop responding and functioning, fall off the mesh making others unreachable. Multiple times i’ve debated trashing my 150+ zwave devices and reinvesting in zigbee.
My transition to zwavejs has been the opposite, everything simply works, I can flood commands to every device at the same time and watch it all work rather than melt in front of my eyes. There’s no delays, or unexpected behavior. More than happy with the swap and its stability.
I struggled w/Zip off and on, mostly related to when I had to exclude or join a device, results were not predictable. JS was initially just not usable for me, all kinds of weird problems.
However, as of a few releases back I'm on JS full time and only difference from Zip is I have one bathroom motion automation that turns on a Z-Wave switch that has sometimes been a little slow (~1 second delay when I walk into the bathroom). But overall it's now completely useful/usable for me, and I love that excluding and including devices is no longer an adventure, it's easy/reliable w/out a bunch of hub reboots.
