As promised, 1-week later with no instability at all. It's nice to have some boring time without hunting gremlins and I firmly believe that the combination of optimizing the configuration along with the BE86U update were the primary items that have brought this stability. Now I will toggle back on the wired Access VLAN on the BE86U node and see if stability remains or if that problem is still existing.
Code:
Uptime 6 days 16 hours 50 minute(s) 47 seconds