@bobbyD - not to get too tin-foil-hattish here, but is it possible some of the initial C8s had some kind of bad zigbee hardware?
I'm not trying to read too much into your comment above to velvetfoot about considering a warranty case, but that coupled with Bruce's response in this post has me wondering if trying a new C8 is worth a shot (warranty or otherwise)...
I'm not having rampant zigbee problems, but I have a few devices that were rock-solid on my C7 (2 Third Reality blinds and 1 of 2 Yale lock modules) that have habitual droppers on my C8 since migration. Although I'm not smart enough to know how to drill down to any specific evidence, I do know my C8 zigbee network is definitely wobblier and more fragile than it was on my C7.
I'm pretty sure (hoping!) the staff is still working on zigbee firmware issues so I am willing to wait more, but if there are any suspected hardware issues with some of the C8s out there, that would be helpful to know -- if that band-aid needs to get ripped off, I'd just as soon do it sooner than later.
Thanks!
