I think I need to look at this myself especially since I have rules attached to the power values of meter capable switches to tell me whether a device is running (dryer and washing machine alerts).
My problem is it doesn't appear that I can change the reporting interval. For the Zooz plugs I have they just seem to ignore what I set in the device preferences and tell me every 2 or 3 seconds or so. I don't get it. Has anybody else noticed this? When my dryer and washing machine are running my hub is FLOODED by constant power updates and even with the descriptive logging turned off (on the rules and devices) all of it hits the logs (and events of course).