I have two Hubitat C8s, both are having the same issue...
I'm currently stuck at 2.4.1.177. If I move beyond that, both hubs start getting Severe Hub Load warnings and auto reboot from 15-60 minutes of uptime.
The first hub has 270 various devices (Zwave, Shelly, Zigbee, matter, Tapo, Kasa..) and probably 50 or so rules, switch bindings, etc.
The 2nd hub only has 6 Zwave devices and shares those via hub mesh for rule processing, dashboard access, etc. It doesn't do any local rule processing, or host any wifi devices. So there's no reason whatsoever for this hub to be overloaded.
I've been working with @gopher.ny for over 3 months on this issue with being no further along on a solution. He says I've been the only one reporting this issue. His intial thoughts where something with mDNS, but I think he's since dismissed this as the root cause.
I then disabled hub mesh, as that was the only real common thing between them, but that didn't resolve it either.
There appears to be nothing in app or device stats, or hub events that something is triggering excessively.
Here are some screen shots of the hub with only 6 Zwave devices...

Any thoughts on what's going on here?




