So I actually may have just found the issue. There were so many post about C8 z-wave issues that none seem to be my specific experience until I finally stumbled on this post, Z-Wave down on C-8 - #5 by adiventure. I am running my hub using PoE power from a Unifi switch. I had my C5 running that way for years without issues but I guess the C8 doesn't like Unifi switches for some reason?
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