Thank you for the response. I just swapped out my Ubiquity Dream Machine because it seemed to have a WAN port that would periodically drop. It was a a few years old and I wanted to get a router with more options. After a fair amount of searching, the ET-12 was at the top of the list on many searches. https://dongknows.com/asus-zenwifi-pro-et12-review/I hope at some point you may reconsider as there seems to be a firmware issue with the ET12's regarding the WAN Port and connecting directly to an ONT by a fiber provider.
Several threads out there regarding extremely poor upload speeds, however the problem is 'fixed' if you either enable Dual-WAN and instead of using the WAN port, you use the 2.5g/1g LAN port as your second WAN or if you use a middle man, like a switch or another router.
I've read a few people mentioning it has something to do with the ONT and WAN Port not being able to negotiate correctly, but I can't tell if that's just something someone is saying and not really knowing anything as I can't find any source for this rumor.
The ET-12 is plugged directly the ISP fiber via a media converter. The second ET-12 is upstairs connected with a CAT-5 for backhaul.
With no VPN, I can see 850/900Mb/s down and about 100Mb/s up. There does seem to be an issue with upload speeds although that hasn't really impacted me. When connected to NordVPN server using OpenVPN speeds are about 250Mbs/100Mbs up down.
I may be able to return the ET-12 to Amazon. What is the best mesh style router that would support Merlin? I know "best" is subjective. For me, it means great coverage and looks nice as well. Since it would be running Merlin I know the UI is good.
Thank you for your input.