I tried again to set up my 3-router network with the New Airport Extreme as the main router with DNS & an airport time capsule 5th gen + a newest-generation Airport Express. I set it up as "create a wireless network" and put everything on the same SSID, same password, etc. I, again, saw my network responsiveness slow down. It isn't night & day.. don't get me wrong.. but it's a blink of an eye closer. Enough to where in regular browsing, I notice a lack of quick responsiveness. I re-disabled the Capsule + Express and with my main router alone, everything is back to normal -- lightning fast. I imagine for someone with a bigger home than mine, that sacrifice is worth it vs. having weak signal.. but maybe my home is too small