I agree... & certainly hope there is something RMerlin can do to improve 160MHz functionality on an AX86U (& perhaps other problematic routers).
Perhaps I mistakenly assumed "the poor reliability" of 160MHz with our AX86U router was due to our physical location.
When actually... the 160Mhz disconnects could be the result of newer code/drivers introduced sometime around the release of 386.7
However, I do understand much of the WiFi related code is "Closed Source"... so we may be SOL ;-(
But if I sweet-talk the wife...
Perhaps she'll let me roll-back the firmware & retest our network.
Or I could just try it when she sleeps, except... schools out & those teenagers stay up all hours of the night using the damn internet LOL
Unless you live in a place where aircraft don't fly over you or you can place your router in a location where it will not receive aircraft weather radar the FCC and many other regulatory bodies require routers to automatically leave the DFS channels if they hear weather radar. To use 160Mhz wide channels DFS channels are required. If you need that wide of a band, then you must move up to WiFi 6E and then only devices that support 6Ghz will work on 6E. The marketing people are doing a number of many people.