@Sunshine Link speed is in the range of 585.0 to 780 mbps. The problem still persists after installing the driver that you provided.

@Sunshine Sorry for skipping the troubleshooting page. The WiFi-strenght is good, so I am not worrying about that. The properties of device didn't give me a direct option to change the frequencies,...

I have 200 mbps internet speed at my house. I've had the TL-WN823N for some time and when it works properly I get speeds nearing 200 mbps as it should. However, for some reason the connection gets...