My Wi-Fi hub has recently been switching my 2.4G channel to 6 every night. This seems rather presumptuous of it. I was rather hoping it might confess to this in the logs, but unfortunately I have over a thousand pages of logs that can only be navigated one page at a time, can't be cleared, and, most bizarrely, are sorted on the day of the month so start with 31st, leaving my current logs somewhere around page 1000 - a very long standing bug.
A trawl of this forum suggests that this might be some 'optimisation' technology at work that I didn't know existed. If so it isn't being helpful as it is moving my Wi-Fi from the fixed channel specifically chosen to avoid interfering with my Zigbee mesh, to one that is slap bang on top of it. Coincidentally that is also the busiest channel at the moment, by some distance. It isn't clear how any optimisation can usefully work without my input to better inform it, as if not being switched to 'auto' wasn't a big enough clue.
Please turn it off on my line.