@dangl Hi, please make sure QoS is disabled on Advanced->QoS page. By the way, are the 5G band and 2.4G band WiFi speed on Archer C6 both 80Mbps? and are the two Archer C6 both version 2?

@zakariahmed Usually there is much interference on 2.4G band, which will affect the 2.4G speed, and 5G supports higher link rate, thus 5G band is usually much faster than 2.4G band. You could try...

@Olha140409_5677 Hi, for internet issue, please follow this guide to troubleshoot: What should I do if I cannot access the internet through Wi-Fi router? In addition, do you mean there is no Wi-Fi...

@NehaJain Hi, do you have another TP-Link EasyMesh router? If so, you could also consider purchasing an EasyMesh range extender directly: TP-Link EasyMesh Devices

@caidao Thanks a lot for the update, glad to hear that you've solved the problem finally.

@mkferns Hi, please follow this guide: How to setup and share a printer on your local network with Print Server feature on the TP-Link device (MAC OS) to check if the settings are configured...