I found this post in your history. Looks like you have wireless TV boxes, so the gateway can't be in bridge mode. So instead you need to put the Asus router in AP mode. That will make it so the gateway controls your network and not your Asus router, but that is the only way to avoid double NAT which might be causing your issue.
If you want to wireless TV service but use your own router, I would suggest looking into another TV provider like Youtube TV.
No. My ASUS router supports WiFi as well. Things work great until they don't -- this is not a case of me not having things setup correctly. Things just go bad randomly.
Do you have wireless TV boxes? Also, do you have a public IP under General > Network Map > WAN IP on your router? Last, what speed do you get direct to the gateway when the problem happens?
