Looks pretty solid, but small.
How long was the hub up in that shot?
The kitchen light and entryway light have a really long RTT, mine are all mostly single digits, and I have a lot more devices.
I just had a thought, the symptoms you have is what would happen if the lifeline association is missing. You could try using this driver to set it using the built in command. Turn on debug logging and run it, should see in the logs it will come back with the current association, should be [1]. Here is Driver: [RELEASE] Z-Wave Universal Device Scanner
Another thing you could try is pairing it without security. It really should not matter but its worth a short if nothing else will work.
