I've been using this modem as an AP for just about a week now and I'm having multiple problems including:
1) With band steering on, 5Ghz capable devices continually dropping to 2.4Ghz and staying there
2) 2.4Ghz band selecting the same channel as my neighbours when set to 'auto' and not changing to anything different, even when manually set to a different channel via the UI and save
3) Frequent drop-outs (3 - 4 times per day) where multiple wifi devices all lose the signal then reconnect again ~1 minute later
4) Less frequent but even more annoying drop-outs where devices then get the "cannot join this network" message for several minutes
I cannot see anything meaningful in either the Systems Log or the Wireless Log. The Wireless Log in particular seems to be a table showing a live view of what's currently connected rather than a history of errors etc.?
I have tried factory resetting and starting again in case I had made a user error but still seeing these issues.
I hoped this would be a good replacement for an Airport Express which barely skipped a beat in its 7-year life, but at this stage I'm thinking of returning it and buying something like a Ubiquiti Unifi.