@German_Soler 

Thanks for reaching out. I understand that your Deco Mesh network is experiencing random Wi-Fi drops, with devices going offline unpredictably and the network becoming intermittent or unresponsive, requiring frequent reboots. This issue started recently, and you've already tried changing main Deco units, operation modes, and disabling Fast Roaming and Beamforming, but the problem persists.

Here are some targeted troubleshooting steps to help resolve unstable or dropping connections on your Deco Mesh system:

Main Deco Unstable/Dropping:
1. Ensure the Ethernet cable connecting your main Deco to the provider router is secure and in good condition. Try replacing it with a new cable if possible.
2. In the Deco app, go to MORE > Internet Connection > IPv4 > DNS Address and set the DNS servers to 8.8.8.8 and 1.1.1.1.
3. Try cloning the MAC address of your PC or previous router to the Deco (see this FAQ for guidance: https://www.tp-link.com/en/support/faq/2925/).

Satellite Deco Unstable/Dropping:
1. Make sure all Deco units are placed in open areas, not inside cabinets, shelves, or corners.
2. Move satellite units closer to the main Deco to ensure strong backhaul signal (aim for at least 2 out of 3 bars).
3. Temporarily disconnect any Ethernet cables from satellite units to see if this improves stability.
4. In the Deco app, go to MORE > ECO Mode (if available) and ensure ECO Mode is turned off.

Client Devices Unstable/Dropping (while Deco LEDs are green):
1. For mobile devices (laptops, phones, tablets):
   • In the Deco app's client list, select your device and ensure 'Speed Limit' is disabled, 'Mesh' is ON, and 'Connection Preference' is set to AUTO.
   • Check the Parental Control section to make sure your devices are not restricted by any profiles.
   • Make sure your devices are connected to the nearest Deco with a strong signal, and try to use the 5GHz band for better performance. Toggle Wi-Fi off and on to reconnect.
2. For 2.4GHz IoT devices:
   • [If available on your model] In the Deco app, go to MORE > Wi-Fi Settings > Advanced and set 2.4GHz Channel Width to 20MHz. Also, go to More > Advanced > Wireless Network Mode and select 'High Capacity' mode.
   • Use the 'Network Optimization' tool in the Deco app to optimize your Wi-Fi channels.
   • If you have many Deco units and IoT devices, try powering off some units/devices to see if stability improves.

If you have already tried these steps and the problem continues, please contact TP-Link support and provide the results of the above troubleshooting for further assistance.

@David-TP 

Is there any beta firmware? I can never keep track of which models have beta firmware from those who don't 

  @German_Soler 

Hi, during the disconnection, have you also noticed any satellite Deco turn red?

How many online clients are connected to the Deco Mesh? Can I have the model numbers of the mobile devices that constantly dropped out?

If we reduce the number of Deco units in the Mesh network, will the wireless network stability be improved?

For example

- On the first floor- two X50 (Main Deco and the other Deco X50)

- On the second floor- leaving one Deco X20 only

Can I also have a screenshot of the network map on the Deco App, such as:

Wait for your reply.

Best regards.

  @German_Soler Have u tried to use Connection Preference to connect your Deco to Deco for better singals and performance. Like from Deco 1 to Deco 2 and from Deco 2 to Deco 3 and from Deco 3 to Deco 4 and from Deco 4 to Deco 5 

  @German_Soler What's your Deco X20 Hardware Version and your Deco X20 firmware 1.5.3 is very old and you have to update to latest firmware because latest firmware of Deco X20 support Connection Preference and after this your network performance will improve alot.