@srwzbk Configured as an Access Point, the speeds are very close to what I get when I bypass the Deco and connect directly to the fibre modem. So that seems to solve my problem. Test speeds depend on...

@FredRabbit Also, I am NOT using any QoS features.

@srwzbk I'm using Router Mode. I will try Access Point Mode when the network is quieter but I suspect I will see the same results

@srwzbk I have exactly the same problem. The fibre router provides 1Gb speeds which I can measure with a Mac connected directly to the fibre router. However the Deco built in speed test shows about...