Hi Everyone,

I have a weird problem with my Archer A6, AC 1200 router of slow speed.

When I connect my router to the ISP providers cable the internet speed is as low as 10Kbps.(ISP provider is using a CAT 6E cable). When I connect the same router into a LAN network of my house the speed is 90Mbps(That is because my primary router connected to the ISP provider is a router without a gigabit port)

To explain the connections:

ISP providers cable is connected to Wan port of the basic router (Xiaomi 3C), from the Lan port of Xiaomi 3C it is connected to Wan port of  Archer A6, AC 1200. 

I have tried factory reset the router twice and configured the Archer A6 - for dynamic Ip and PPPoe and checked if it makes any difference but no luck. Also The ISP provider has rechecked for any fault in the cable it works fine.

Donno what to do