@Celestin6669 

Hi, thanks for posting question in our communuity.

If certain client devices are experiencing frequent dropouts or losing internet connectivity when connected to a TP-Link router, there are several potential reasons and troubleshooting steps you can take:
    1. Check Wi-Fi signal strength: Ensure that the affected client devices are within range of the TP-Link router and not obstructed by obstacles. Consider repositioning the router or using Wi-Fi range extenders to improve coverage.
    2. Adjust wireless channel: Change the wireless channel on the router to minimize interference from neighboring networks.
    3. Check wired connections: If the affected devices are wired, try using different Ethernet cables and ports to rule out any issues with the connections.
    4. Update client device drivers: Make sure the network adapter drivers on the affected client devices are up to date.
    5. Disable router features: Temporarily disable advanced router features like Quality of Service (QoS) that may be causing compatibility issues with specific client devices.
    6. Update router firmware: Check for and install any available firmware updates for the TP-Link router to address compatibility issues and improve stability.