In the Virtual wireless section only 20MHz and 40MHz Channel Width is available for the 5GHz Band.
That means changing any setting in the Virtual wireless section will set the 5GHz Band to 20MHZ Channel Width if it was originally set to 80MHz.
Router: ASUS RT-AC66U
Firmware: 1.28.0511 MIPSR2Toastman-RT-AC K26AC USB VPN
That means changing any setting in the Virtual wireless section will set the 5GHz Band to 20MHZ Channel Width if it was originally set to 80MHz.
Router: ASUS RT-AC66U
Firmware: 1.28.0511 MIPSR2Toastman-RT-AC K26AC USB VPN