MODEM TEST

I have a 1 GB Network.  Confirmed this with wired connection to modem.

DECO CABLED TEST

Connect X60 Router to the modem and test wired connection to X60 = 939 Mbps (acceptable).

DECO APP BROADBAND TEST

Same results and being directly cable connected to X60:  948 Mbps (acceptable).

DECO ROUTER WIFI TEST

This is my Deco X60 wired to the provider's modem.

My test machine is a Windows 10, 802.11ac adapter, link speed 866 Mbps, 160 MHz wireless.

Best I can get in download at 3 feet is 328 Mbps. Tested with Speedtest App (app, not browser).  Unacceptable in my mind.

Only 2 devices were attached to this router by WiFi.

I did have my other 2 satellite Decos up and running.

MY PROCEDURES TO GET BEST PERFORMANCE

I have done everything described in Troubleshooting: Slow Internet Speed with Deco Devices

WHY IS THIS NOT PERFORMING?

I'm at a loss as to what should be the next steps.

I had hoped that the WiFi (right next to the source) would at least be above 500 Mbps.

Get technical here fellas - what is the reason this is nowhere near the advertised speeds?