So, it’s not the power brick seemingly. That tested fine. I ended up moving my hub to a different outlet, and that seems to have resolved. I don’t think it’s the outlet though. I had it installed next to a Z-wave repeater (Aeotec Range Extender 6) that I’m wondering if that might have been crashing the hub or something. It was also quite close to a Zigbee device (few inches). It had been next to the zigbee device, however, for quite some time, where the zwave repeater had been relatively recent.
So if you’re using Z-wave stuff for home automation, and happen to have your hub next to a zwave or zigbee device, try moving the hub. Not positive it’s the solution as it’s only been 2 days, but so far, it seems better.