My system uses a wired network except for a RPi4 running Ropieee wearing an HiFiBerry audio HAT located in my kitchen. Annoyingly, I have been constantly irritated by audio drop outs to this WiFi connected endpoint.
Whilst the wired network performs faultlessly I have discovered the WiFi network fails whenever the microwave is operated. The fault is easily replicable, so much so, that I don’t really need to configure the recently introduced sleep timer!
I can live with this but I had no idea that microwave ovens mess with WiFi networks.
Forum users may wish to consider rogue microwave signals when attempting to improve connectivity.