As the move to smart devices has gathered pace, there have been a surprising number of unintended consequences, some of which are not so unexpected when the commercial origins of many of the "smart" device vendors is considered.
One these unintended but not unexpected consequences results from the reasonable attempts by electronic goods vendors to improve energy efficiency whilst maintaining usability. So TVs and audio systems often enter a "sleep" period during the night. It is more complex that it might appear at first sight, there is sleep, light sleep, deep sleep and then, ultimately, turn the power off. To add to the complication, many devices also have some form of Wake-on-LAN capability, or send a packet indicating that they are available.
Currently, some Chromecast capable audio devices from Sony appear to go up and down several times each night, as far as error reporting is concerned. Meraki doesn't feel a need to do anything about this, nor does Sony.
Sky devices show similar behavioural characteristics, and some switches don't handle it very well. Problems disappear when the sleep function is reconfigured. In extremis, turn off the Sky kit.
Network manufacturers need to get together with the smart device vendors and explain how to play nice, and, incidentally, stop cheaping out on Wi-Fi components.