WiFi only working on 5ghz and some channel 11 networks

Hi, Ive got a problem with wifi on Big Sur with a tp link archer t6e ac1300 where it doesn't show all networks and can't connect to the ones it does show, except 5ghz. The tp link card shows wifi networks on pc but also struggles there sometimes, so I'm not sure where the issue actually is.

Any help would be great, cheers

system

Ryzen 5 3600

Gigabyte aorus b450m

Author: @MelonBoi12