My 86U was delivered three days ago! I reset, loaded Merlin 384-18, and went through the
minimal-and-manual set up that you recommended. I added enabling SSH from LAN only, and haven't yet tested to find the best channels. I'm about to start a separate thread asking how to do that.
What I'd like to ask here, though is: how would I test it fully? It seems to be working OK except possibly for a couple of momentary dropouts, but I haven't done any systematic testing except for vanilla speed tests which seem at least as good as with my previous router, which was an AC1900 (my cable service, based on ethernet-to-Mac results, is 190mbs down, 10 up).
Is there a test procedure somewhere? If not, any advice? Thanks for all your help on this forum!