@Jim27 

Connection Preference feature will become visible in Deco app only when all Deco units in Deco mesh support it. You have X50 and X20s, it appears either one of these models or both do not support connection preference.

I may be able to figure which one, if you can share screenshot of Update Deco page from your Deco app with me. Example is below. 

  @Alexandre. 

According to the app all of my Decos firmware are up to date. Here are the firmware version and build extracted from the app.

• Main Deco X50
  • 2.0.10 Build 20240821 Rel. 48325
• Deco 1, 2 and 4
  • 1.5.3 Build 20231227 Rel. 62097
• Deco 3
  • 1.0.3 Build 20210205 Rel. 35873

  @Jim27 

Unfortunately, not one of your Deco X20 supports Connection Preference feature. They have different firmware versions, because they came with different hardware version. I am guessing, you bought 3-pack X20 (Deco 1, 2 and 4) and then separately single Deco X20 unit (Deco 3).

I can't tell if X50 supports Connection Preference or not, from looking at its firmware version, because X50 appears to be on customized for Internet provider firmware. Firmware is quite fresh, released in August 2024, so it might.

It may be possible to figure that for your X50, as I have an idea how to do that, but this does not make any difference unless you replace all your X20s with Decos which support Connection Preference feature.

  @Alexandre. 

The weird part is that Deco 1, 2, and 3 are all hardware version 2.0 while Deco 4 is on hardware version 1.2. Yet Deco 3 is the one with a different firmware version compared to the other X20s.

I switched internet provider few months ago to go from 400 Mbps to 500 Mbps at a lower price and with fiber. Yet, from experience I seemed to have a better overall speed management on my X20s when they were used as satellite on my old cable internet provider.