Absolutely. I would have gone insane long ago without a sniffer...
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Yeah that is weird - I just went and triggered zwave 4 sensors, and only the washroom light turning on registers in the zwave logs. All the device events are there, and all automations worked correctly (the washroom light is the only zwave switch being turned on).
Zwave Logs:
Device events:
My devices are all Gen5 Z-wave+, not Z-Wave LR.
No, because I'm running higher quality/dBi antennas on my "radio" Hub (from back when some of us modded our C7's with external antennas to improve performance). The secondary is just running the stock antennas - it's also intentionally dedicated to my extremely active LAN/Cloud devices, and the radios are disabled.
"Lesser used" is also not accurate, it works almost as hard as my Primary hub.
Thanks, I do have a Z-Stick and will give that a try.
It's worth noting that I did have about 15 Aeotec devices sqauking their power info every 5 mins - this is now set to as many hours as the stock drivers allow (as of this morning my time). So it'll be interesting to see if this makes a difference by reducing zwave traffic.
So I left the z-wave logs open for an hour, and finally saw a sensor appear in the list:
But it wasnt a motion event, just a temp reading:
So this seems to have helped, a lot! I haven't seen any missed events in several days. Im not sure if the power reporting info was causing the z-wave radio buffer to overflow, or what, but the issue seems to have gone away. 
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This isn’t you, but I tried turning the antenna 90 degrees for a problem device in the basement a couple of days ago. Fixed it! The gate and mailbox sensors still communicate so I’m golden.
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Yeah, antennas aren’t my problem. 
Zwave: 900MHz 5 dBi Rubber Duck Antenna HG905RD-RSP
+
Zigbee: 2.4GHz 5.5 dBi Rubber Duck Antenna HG2405RD-RSP
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Cool!
Something like that would have been my next step.
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Factory ducks are dual band. Yours are not. How do you know which antenna goes on which port as the antenna connections are not labeled. I was of the mind to think both ports were dual band which could allow for some beam forming like WiFi does.
On both C8 models, the z-wave antenna is the one closest to the usb-c port.
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Looks like you might have hit the jackpot on your suggestion. Damn power reporting...so sexy, but can be so dangerous. 
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It’s based on experience unfortunately… I have a lot of Inovelli switches & dimmers, and they all do power reporting…
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Argh, I spoke too soon, I just had a missed contact sensor event! 
I had to re-open and close the front door because Habitat thought it was still open (it wasn't).
Z-Wave info:
This unit is a gen5, so I might upgrade it to a gen7 and see if that helps.
So yesterday I replaced this sensor with the zw700 series version - signal strength has jumped to 10dB, from 8dB. I have no idea if that will cure this sensor's missed events, but I guess I'll find out.
So far, at least, I haven't had any other sensors with missed events since changing the power reporting intervals on mains devices.
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Not sure if this was mentioned but did you try this device preference?
Enable command retry logic
Aiui, that only works for commands being sent to devices, It doesn’t apply to sensors sending events to Hubitat.
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Oh well.
I just discovered it.
I wonder when Aeotec will be rolling out the 800 LR version of that sensor?
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No idea, so far, the 700 series is working well - the signal strength even went up from 10dB to 12dB somehow.
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I can see how you'd want to stick with that sensor, what with the drilled hole and all. 
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Yep, and it has very high WAF as a result. I was told that of she could see it, I couldn’t use it. She barely tolerates the motion sensors cause we already had some for the security system. 
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I must be lucky, my wife let's me do whatever I want, unless it affects her TV.
Things usually bothers me before it bothers her.
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