This adapter is reverting back to 2.4GHz when set to preferred band 5GHz.
In adapter properties, advanced, preferred band... set accordingly but doesn't play ball.
Drivers are up-to-date
The usb adapter is meant to be top tier

any ideas please?
---------- Post added at 11:26 ---------- Previous post was at 11:03 ----------
Shocking. It only supports 20MHz width. I think predecessor Netgear AC1900 A7000 performed better!