This has been a problem before but now that we upgraded from 50/10 Mbps to 120/25 Mbps I have to figure out whats the problem. We have a DSL connection which is 100% stable and on a PC I get constant

I'm using 2 Archer C6 v2 routers as wireless access points. When the Archer C6 routers are disconnected from the main router, my internet connection is fine. However when either or both C6 routers are