Everything stopped working about an hour ago

maybe a coincidence but I was having trouble with a number of my zwave devices (even after the latest update) and noticed one of my GE ZW4005 12722 switches would not active my rule when manually pushed.
It worked fine turning on/off from the the device page in hubitat prior to manually pushing but after manually pushing it would stop responding from the device page and I would have to wait at least 10 minutes for it to work in device page again.
I then noticed a lot of my other zwave devices would also stop responding from the device page after this switch was manually pushed and also take at least 10 minutes to start working again.
The worst affected were my Schlage BE468 locks both of which would stop responding for hours (not sure how many but at lest 2 hours) they were working when I woke up.
Everything eventually all starts working again.
restarting the zwave stick makes them work faster.
I tried airgap/removing power from the switch and it was always the same.
It always affected the same devices not all of the zwave devices but most of them and again only when manually pushed.
Did not seem to affect brand/model specific some devices that stop working another device of the same brand/type was not affected.

I put it down to a faulty GE ZW4005 12722 switch (it worked a few days ago)
note even after physically removing the switch I still had to turn my zwave stick off and then back on to get my schlage locks back quickly.