@Saku241 Hi, IoT network is a separate Wi-Fi designed for IoT devices. IoT network devices are NOT isolated from the main network, devices connected to the IoT network can communicate with the main...

@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.