About to send the Hubitat back, can you help me salvage?

Great, the devices should react & report almost realtime-0.5 seconds for me, outside of the usual ST delays. The hubconnect thread has a ton of great info. I usually will search the thread for my issue, like put in "delay" and see what others have discovered.
Have fun !

It's nice to see that your hubitat experience is turning positive. I can almost sense your excitement in the journey now. When you move things over, don't forget to start migrating your rules as well. This can be something that will fill your time as you can move a rule and leave the equipment. Then replace the equipment in the rule as you move it over. Good luck!