only one device had a LWR RSSI of under 16dB (12 from memory)
Since update:
one device has dropped to 40kbps
direct connections have dropped to 44 from 48
8 devices are now 16dB or less
Don't get me wrong, everything seems to be working ok and I'm not going to obsess about it. However what I'm interested in for my own growth is:
"If everything had a 100kbps, direct route to hub with a LWR RSSI of 17 plus prior to upgrade, why did many devices use a less than optimal route with a lower RSSI after update"
There haven't been any Z-Wave changes in the releases from .193 to .200, so the update is coincidental/unrelated to changes in your mesh. The way I think about it is when you look at your Z-Wave Details page you get a "snapshot" of how the mesh is at that moment, and regardless of what you do or don't do things can and often do change over time. Not unusual for Z-Wave meshes to not change for long periods and then decide to change things up. A bit of a black box... You may find that the routing/speeds will flip back to previous over time, or they may not.
I've had some "stupid" routing show up in my Z-Wave Details, devices routing through other devices across my entire house and w/slower speeds, but worked perfectly/no issues for years. So what I do is what you said, not obsess or try to "fix" it (unless I see actual problems).
You can always do the "shut hub down/pull power/wait 30s/restore power" dance to see if clearing the Z-Wave radio results in any changes. Again, may take some time for the hub to decide it wants to change things...
If you do enjoy digging deeper into your Z-Wave info, you can take a look at your Z-Wave topology (button on Z-Wave Details page). Start in first column for each device, and look to the right - when you hit blue squares look up and you'll see the device that is a neighbor (can see each other). Red squares indicate not neighbors. This data (like the Z-Wave stats is "point-in-time" and can change over time, of course.
Yeah I've seen things switch about previously. Often I'll have the same number of direct devices but different ones. To me logic would dictate that the 'perfect' routes that were previously in use would remain after upgrade (they have previously). A device 10' from the hub with optical line of sight, that was previously a direct connection, now routes through a floor to a device in the room above, then another hop through two walls to the opposite end of the house where it connects to a node that is 'Direct' (through a floor and three walls)
It's Z Wave Mesh Details that I use so have refreshed it a few times after operating each device from the hub but it stubbornly hangs on to sub optimal routes (by that I mean that the current routes result in lower LWR RSSI values for many devices that fall beneath the magic value of 17 that keeps that field black rather than highlighted amber/red)
Agree, that's logic we have discussed over and over here, but it has never been consistently supported by actual device behavior. This is far from the first time one of us has posted/wondered why our devices chose "bad" routes... I don't remember seeing one of those "bad/dumb" routing choices ever actually cause me problems, more a situation of wondering why the heck things still "just work" in those situations.
Checking out your topology might provide you some clues/info supportive of the routes...or might not.
You could do indivdual repairs on the devices w/the routes that you're concerned about, that might help get them to look around and find different routes.
