Smartthing high data usage

What @tpip said.

Here is the url: http://ide.smartthings.com

Usually each device sends up a couple of commands a minute. SmartApps can depend, I would guess simple ones 1-2 commands a minute, maybe up to 10. But these are small packet sizes, a few kilobytes per (if that). I would look for one just running like crazy.

I have the ADT ST Hub and was satisfied on a 5gig Verizon Smart Hub for several months. Recently, say May or June 2019, usage skyrocketed with no device changes in the house. It is so bad that I power off the router when I leave. Since alarm is one function . . . considering other options.
I suspect ADT ST hub, but have not confirmed. The only other things I have not turned off are 2 Honeywell thermostats and a Samsung frig that I have not accessed since the bug hit. I plan to return to the lake soon with WireShark on a laptop to diagnose. I’ll report findings if diagnosis yields fruit, but WireShark warns that WiFi tracing on Windows may be problematic.
I see lots of speculation, but did I miss the resolution?