I've made a fresh installation of shibby 116 on a new ASUS RT-AC66U router. I've followed the very helpful youtube video by shibby explaining how to get the 5ghz interface to appear. When I configure the 5ghz interface, I get a lovely list of channels when I choose either 20 or 40 MHz channel widths. They seem to work fine—if I choose them and save, I see correct settings back on the overview screen: The problem is that I have no available channels when I select 80MHz channel width: If I just leave it to "Auto", the changes don't seem to get saved. I see whatever I had before (40MHz, channel 48, like in the screenshot above.) I've read every thread I could find on the subject. My region in Advanced->Wireless is set to EU. How do I get my router configured to use 80MHz channels— and 1300mbit speeds? P.S. — Apologies for the sh*tty photos-of-screen instead of screenshots—configuring the router from a computer disconnected from the internet, was the easiest way to get screencaptures.