Really bad Z-Wave performance, even with LR

[danabw]

If you haven't seen this topic yet, it's worth a read to get a background on the types of issues with power supply that can affect the C8.

PoE and the C8 (with extensive testing)

In the hope that it will be useful to others, I thought I'd share my testing of the C8 powered via PoE. There have been many references to issues when powering C7/C8 units using Unifi switches, but it should be understood that these issues are not specific to Unifi. My main switches are Cisco CBS 350s (192W), and while I had no issues powering C7s with inexpensive lightweight PoE splitters, the C8 has been a completely different story. FWIW, I've also tested with a dedicated Trendnet PoE switch…

The TL;DR:

@dennypage

For those that want to skip the gory detail, the take home point is this: My opinion is that Z-Wave on the C8 appears to be very sensitive to voltage fluctuations.