@Mitch_Art Exactly im facing same problem on Deco M4 when Fast Roaming is ON all the devices at home could'nt switch to nearest Deco. We have to turn OFF / ON our mobile wifi option. I'm facing this...

@Zibous You have to Turn OFF Beamforming and Fast Roaming and also check QoS Settings and Turn OFF QoS too.

@pawelb Download Network Analyzer on Android to check but im using Paid Version and you can find out on Google which software is available on Windows to check wifi info or you can check on windows...

@Zibous So your problem is that all the devices are connected on 2.4 GHz and have you changed the Main WiFi only on 5 GHz and IoT Network on 2.4 GHz only? And connect all the mobile phones and...

@Zibous Are you using Deco in Router Mode or AP Mode? And in which mode are you facing these issues?

@pawelb If you have Laptop or something check on that device.