I recently purchased 2 Deco M9 Plus units after reading many positive reviews about them.
After installing both units I switched them to AP mode and connected all my devices.
Both units are connected directly to my modem/router with an ethernet cable.
The issue is that my desktop reaches 500/40 mbps (also connected to the modem/router) and the Deco only reaches 90/40 mbps.
When I run a speed test on my phone (Galaxy S9+) I am also limited to 90/40 mpbs, even when standing right next to the Deco.
I have tried rebooting both units and they are both on the newest firmware, this speed is unacceptable for such a premium price.
Also, since I have both units connected via an ethernet cable, I hope they aren't trying to connect wirelessly to each other.
What can I do to solve this issue? Also, why are they deployed as routers by default with such limited options?