Can confirm that there may be some memory leaks on this model. After 6 days of being powered on, memory usage is now 81%. As @UK Sentinel states, early days on this model. As for the UPNP status under AI Protection, it shows correctly once I disable it. All of the checks on my side are green. So far after 1 week, not even a single drop, something that my previous DSL-AC68U was not delivering anymore. Hopefully I get the download modulation reverted back to FastPath soon.
Let us know by the end of this week if the Memory usage increases again, as this will be interesting, are you getting many errors on you DSL line (Downstream) and good news the connection is rock solid 
In a completely sane world, madness is the only freedom (J.G.Ballard).
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