Running RT-AC86U_382.2 and a couple of things on a good build:
1. On GUEST wireless networks, its not possible to hid the SSIDS or not independently of normal WIFI SSIDs. I like to broadcast SSID for Guest Networks but hide for my IoT/Media SSIDs. I tried SSH to the router, and set each WL0.1 device for example to be closed=0 but after reboot it was reset to whatever the setting was for the main Wi-Fi SSID setup.
2. When in IE11 on Windows 10 creators update, I go into 'ADMINISTRATION' menu option and then 'TEMPERATURE', an exclamation mark ('!') icon flashes saying IE8/9/10 are no longer supported. Seems a bug, because I am in IE11 and no other page displays that icon?
3. The Timezone adjustments for GMT/BST were not correct on English by default for UK.
4. I only seem to get the TOP 5 clients in Traffic statistics? When I selected one of the devices, I got two other devices for that device, that were on different MAC and IP addresses listed in the data output. IS this a bug?
5. WIFI Time schedules do not always turn the WIFI back on (notably 5GHZ). Sometimes I have to reboot the router.
6. Annoying that I can't copy and paste any MAC addresses from the AIProtection screen when it lists a MAC address or IP address. Probably the default ASUS code in play here, but would be nice to be able to copy and paste text from that screen.
7. Can WIFI output be the correct allowed strength for the UK. I am sure I read that Asus lowered to FCC regulations for output power, but Asus should use the power per country allowed, not blanket (weaker) setting?
Other than that, pleased with this router and Merlin firmware. First time I have ever used Merlin as I am new to Asus routers having previously used Billion and Draytek and Netgear. I gave up on the DSL-AC88U as that was fraught with flaky hardware for Wi-Fi, and numerous serious bugs in Asus firmware. I had three units and plumped for RT-AC86U in the end!