@TDawgSmitty Your Satellite Deco is connected to Main Deco using WiFi backhaul. Connection between Deco nodes is called backhaul. Signal link between Main and Satellite Deco is decent, so all is good...

@TDawgSmitty In Deco app, open info screen for Deco node (Main or Satellite) and it'll show you which devices connected to it. Example:

@Sesquicunnus Depending on X20 hardware and firmware versions, there may be options that would allow to force your solar PV system use 2.4GHz band. If your Deco set does not have these...

@MartinBG You could try making other X20 Main Deco, but I am out of ideas. Everything seem to be setup properly, yet speeds are not what one would expect from WiFi6 WiFi mesh. Deco X20 is budget...

@mryan143 See Q6 of the following TP-Link FAQ: General questions about Ethernet Backhaul feature on your Deco

@MartinBG 1.2Gbps link speed is what should be for X20 on WiFi6. Running Deco mesh in Access Point mode removes all possibilities of traffic throttling by Deco settings. Powering off Satellite Decos...