@Darfdork 

Okay, I understand that you are experiencing frequent Internet drops on your Deco Mesh system, even though the main Deco unit's LED remains white. The issue is only resolved after you manually reboot the system. Let's go through some steps to help address this problem:

Main Deco Unstable/Dropping Issues:
1. Check the Ethernet cable connection between your ISP modem and the main Deco. Try replacing the cable with a new one to rule out cable faults.
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. If your ISP requires MAC address binding, try cloning the MAC address of your PC or previous router. For details, refer to this FAQ: https://www.tp-link.com/en/support/faq/2925/

Satellite Deco Unstable/Dropping Issues:
1. Ensure that all Deco units are placed in open areas, not inside cabinets or corners, to maintain strong signals.
2. Move the satellite units closer to the main Deco. Ideally, the backhaul signal strength should be at least 2 out of 3 bars.
3. Temporarily remove any Ethernet cables attached to the satellite units to see if this resolves the issue.
4. In the Deco app, go to MORE > ECO Mode (if available) and make sure ECO Mode is turned off.

Client Devices Unstable/Dropping Issues:
1. For mobile devices (laptops, phones, tablets), in the Deco app's client list, check that Speed Limit is disabled and that Mesh and Connection Preference are set to default (Mesh: on, Connection Preference: auto).
2. In the Parental Control section, ensure your devices are not restricted by any profiles.
3. Make sure your devices are connecting to the nearest Deco unit with a strong signal, and use the 5GHz band if possible for better speed and stability.

If you have many IoT devices or Deco units, try powering off some to see if the situation improves. If the problem continues after following these steps, please contact TP-Link support with the results of your troubleshooting.

Let us know if you need further assistance!