R6400 5Ghz only 289Mbps Option

[RynoRBO]

I cannot find a solution why my 5Ghz channel only has only 1 speed option "289Mbps"

2,4 & 5 is working and 2,4 has 450Mbps as a max

[troubleshooting]

Can you show the drop down list on your selection options for modes?

it in you wireless settings

You should find that it’s adjustable to up to 1,300.
https://www.cablefree.net/wirelesstechnology/wireless-lan/wlan-frequency-bands-channels/