Asus ZenWifi AC Slave Router Speed Cap?

Hey Everyone,

First time poster here and total noob when it comes to networking...

I just "upgraded my Comcast Xfinity xFi modem/router and 3 xfinity pods to:

Netgear Nighthawk CM1200 cable modem
Asus ZenWiFi AC3000 - x4

My goal was to get and faster and more reliable WiFi signal throughout my 8000 sq. ft. house as well as try to give Comcast as little $$$ as possible, lol.

I spent about 4 hours last night setting everything up (again, total noob when it comes to networking). For the...

Asus ZenWifi AC Slave Router Speed Cap?