@paulpoelstra You can use Deco Guest Network to have 2.4GHz-only WiFi under different SSID.

@Claire157 Do you still have your Deco M5 units, and Deco M5 mesh in your Deco app?

@IgorFkx Roaming works just fine with my Deco M9 and M5 mesh. I can have Android 9 smartphone or Surface Pro tablet connected to Satellite Deco M5, make device stream YouTube video in 4K, walk...

@DukeCaboom >The TP-Link Deco units only have two network ports for physical connection. If you need more ports, get simple unmanaged gigabit switch, preferably from TP-Link, connect it to one of...

@Singh007 Another test that you could run is to turn off all Satellite Deco, leave just Main Deco, and run speed tests with devices now for surely connected to Main Deco. What you will get in this...

@Singh007 Turn off 2.4GHz in Main Network and see if it can improve speed, because then you will be disabling band steering and forcing your mobile devices always use faster 5GHz. If you see no...