Never noticed the X before! I'll check that out.
As for Brand:
Switches - All are HomeSeer.
Dimmers - All are HomeSeer.
Firmware - all are updated to the latest versions available from HomeSeer for the devices.
There are roughly 60 of the HomeSeer Dimmers / Switches.
5 Schlage BE469 Locks. These are non-Plus devices. They are all working.
2 MonoPrice Garage Door tilt sensors (working).
1 MonoPrice Motion Sensor (some problems - but this was added after the multi-event problem came up, so I don't think its the issue - and its a battery operated device, so almost always asleep). I've seen postings by others about problems with the basic Z-wave Motion / Temperature driver so I think I just need to swap the driver to get this one working.
I have a bunch of other devices that I haven't added to Hubitat yet (waiting for the problems with these dimmers / switches to be fixed first) before adding a "new" device to the mix.
I believe the extra events are always coming from the switches / dimmers.
My assumption is this could relate to the 700 series interface and the "network Busy" messages that get displayed in the log from time-to-time -- others have been having these "Busy" messages too. If the interface is "busy", I assume the devices may have been broadcasting "retry" messages which then get delivered in a bunch. If it is that, I'm assuming this may be a Silicon Labs / 700 series interface firmware problem. Just a hunch though..