for years I've had occasional apparently random flickering of my LED kitchen counter lights, which I ascribed to flaky electronics north of the z-wave switch.
This morning, inspired by some new info about z-wave optimization, I tried an optimize command on a node near those counter lights. It failed for that node, so reached out to the nearest nodes, which included the counter lights.
At essentially the same moment the Event Log showed the Indigo optimization talking to the counter lights, they flickered.
Expected?
I saw it happen again when I saw the log update with "Optimizing - finished "005 - Counter Lights""
Indigo says the model is a "Dimmer Switch - (45606)" Pretty certain it's a GE.