Hello!

I have a large house that I am trying to improve the coverage of the Wi-Fi. I have a BGW320-500 gateway from AT&T, and I am trying to use my mesh router deco X55 to improve the coverage of the wifi. My current setup is to use the gateway in IP passthrough and the X55 in wifi-router mode. However, my current setup is not working as I'm getting 50-100 Mbps max on wifi download speed tests. My ethernet speeds are fine however (it's a wired connection from my PC to the deco in living room). For context, my At&t fiber plan is up to 1000 Mbps download and upload.

I have searched everywhere online for self instructions on how to fix the speed issues/improve speed using the mesh router setup. Nothing is working unfortunately. Could anyone provide assistance with this?