Good router and works very well with an external antenna, however VPN performance using OpenVPN is quite slow. Also regularly fails to connect to 4G on startup, so sometimes needs 2 or 3 restarts before a connection is established which is a pain as it is quite slow to boot.

As usual, Asus tests both the AC66 with Dongle and this, both hanging constantly, then hardly a flashy GUI helps. Also does not help with Merlin FW. Sad for good features otherwise.