TP-LINK archer C6 (EU) wifi 5gz band 80 mhz

Hello everyone, I've been looking around the forum a bit and I can't find something that solves a small problem that I have with the TP-LIK ARCHER C6 router after configuring and activating the router's 5gz wifi and connecting a device looking at the configuration of the wifi barely connects to the 80 mhz band ...... it is almost always on the 20 mhz ......

Is there a way to fix this? If there is any way I would appreciate it if you could explain how, even if you have to do it from the command line :face_with_raised_eyebrow: