Agreed, a half dozen messages every 10 minutes won't harm Zigbee performance, though the periodic flood of broadcasts from multiple devices (the match descriptor traffic) might impact a mesh that's on the hairy edge of functionality.
But the impact on battery life is another story... these devices aren't designed to support their target battery life (criteria for certification of a Zigbee device is actually two years) unless they remain in sleep mode practically all of the time, or constrained to transmitting simple sensor events. Even for devices like IR sensors in high traffic areas, impact on power consumption of continual periodic broadcast messages (which in turn involves subsequent polling cycles for replies) is much more drastic than signaling motion events (there's no subsquent required polling for message retrieval).
Interesting to note the differences in power consumption of sleep, awake, and 'radio on' states for a typical ARM Cortex Zigbee SoC. Using a 2016-era SiLabs Ember device as an example, while not part of a network the device's current consumption is around 7.5mA fully awake with just the controller running. While scanning for PANs or trying to join a network with radio fully on, it consumes 30-35mA; as it does during transmissions and listening for replies, along with processing intervals during which it consumes around 10mA. Yet while asleep the device consumes only 1uA, at least 30,000 times less power. Even with radio off, while just processing the stack and deciding what to do next, device power consumption can be 10,000 times higher than sleep state.
And the devices with the smallest capacity-- the wafer cell types like 2032 and CR2450-- suffer the most impact to battery life, not just by increased average power consumption but by patterns that involve periodic current spikes in the 30mA range. Thanks to Nordic Semiconductor for this informative article that explains it much better than I can: High Pulse Drain Impact on Coin Cell Battery Capacity
Just applied .126 (before getting wind that a new release is imminent, as is my custom ). The good news is that Zigbee logging (re: OTA clusterID 19 frequency) looks much the same as it did on 2.3.2.141...
@gopher.ny, just a data point: my Iris motion sensors all quit working after I upgraded to 2.3.3.128 on my C5 (zigbee only) hub. They seemed to be hit and miss after the last 2.3.3 upgrade, but I don't remember when I did that upgrade. I brought up the logs before downgrading and didn't see anything odd. I rolled back to 2.3.2.141 and they are now back online and working fine.
4 Centralite door sensors
2 Centralite keypads
3 Hampton Bay fan controllers
3 Sonoff humidity sensors
7 Sengled door sensors
2 Samsung buttons
2 Iris 3210-L outlets
10 Iris V2 motion sensors
1 Centralite Pearl thermostat
2 Centralite mini plugs
Don't know if the Hampton Bay controllers or the Pearl thermostat can route, pretty sure the plugs/outlets can route, everything else is battery powered.
On 2.3.2.141 everything works fine...when I upgraded to the various 2.3.3 versions is when I started to have issues with the motion sensors. Not sure about the other sensors, but I do remember the door sensors seemed to work OK just sometimes very late in announcing that the doors were opened.
I'm currently running 2.3.3.128 on a C5 (ZigBee & ZWave) in a 1200 sq ft house.
I have (18) Iris V2 Motion Sensors and (6) Iris V2 & V3 contact sensors, plus other battery powered ZigBee devices. No issues. I have half a dozen pocket socket repeaters scattered around the house.
We had a 50 hour power outage this week and even without the pocket socket repeaters, the motion sensors were still taking to the hub. I was looking at the temperature in each room. I used a small genny to power my essential items which didn't include the pocket sockets. The power outage was on versions .125 & .127
We are in the Tampa Bay area and were very fortunate. No real damage. I did lose the main board in the fridge and a GE ZWave switch when the power came up and the photo eye in my coach light. Amazon delivered the board and eye yesterday and I'll get them swapped this weekend. I keep spare switches for such an emergency and Jasco is sending a replacement for my stock.