Kiwkset smartcode 10 and SONOFF S31 Lite

[gbatt]

My network is mainly Zwave.
I have had rock solid reliability with the 2 devices that are on Zigbee, a Kiwkset (Weiser) Smartcode 10 lock and Thirdreality water sensor. Both of these devices are less than 15 feet from the C7.
After adding two SONOFF S31 Lite smart plugs (distance >15 feet) the lock stops working on Zigbee within a few hours of power cycling it.
As part of my diagnosis, I changed to several Zigbee frequencies. This had no impact on the lock becoming nonresponsive.
My general conclusion is the S31 units are causing this issue.

Has anyone had similar issues?
Any recommendations on how to fix this?
If I change to other Zigbee smart plugs should I expect this issue to go away?
Any thoughts on Thirdreality smart plug 3RSP02028BZ?

[Hatallica]

@gbatt

My general conclusion is the S31 units are causing this issue.

If you do a quick search in this community for "sonoff s31" or "sonoff s40", then you will find similar anecdotal postings. I don't fully understand, but my own system behaves better since removing them.

@gbatt

Any thoughts on Thirdreality smart plug 3RSP02028BZ?

I have 4 of their metering plugs. Depending on firmware version, they can be chatty with power reporting. Of course, the non-metering versions would not have this issue. They behave well in my mesh.

[jtmpush18]

This is very strange.
I have a few S31's on a C8, without any issues.
Perhaps its because Im using the generic zigbee outlet driver.

Also, I added them to this C8, not migrated from another hub.
One more point. From the Zigbee graph, I can see that it is directly attached to my hub.

[gbatt]

Thanks for reply. I can't understand it either. I found that with only one S31 Lite on my network Kwikset lock and everything else works great.
I will continue with only one S31 and switch to something else for other switches