Hi @Szczepan94 

For your case, please also try the following suggestions:

1. Verify that both the main router and satellite devices support EasyMesh Ethernet Backhaul and have the latest Ethernet Backhaul-supported firmware.

2. Follow the correct configuration process outlined in the guide for building an Ethernet backhaul using two EasyMesh routers: Build an Ethernet Backhaul

3. Check the Ethernet cable between the main router and satellite device and try using different cables.

4. If there is a switch or other devices in between, connect the satellite device directly to the main router.

5. Try using different Ethernet/LAN ports on the main router and satellite devices as the backhaul port.

6. Reset the satellite device and repeat the EasyMesh configuration process.

  @Joseph-TP thanks, but these are like the most generic troubleshooting steps. My network works okay, I have full stability and transfers through LAN, all devices support EasyMesh with Ethernet backhaul. Everything works fine, but I have limited transfer on some of my devices and stability of the connection is bad.

Let me rephrase the question: is there any way of diagnosing EasyMesh networks? Like some debug application for it? I can't access configuration page, since it's not available when TP-Link device is a sattelite and I can't see anything useful on my main router.

Hi  @Szczepan94 

Can I know which specific clients are unstable? Is the unstable connection mainly manifested in wireless connection or wired connection? What are the specific manifestations? Are these devices mainly connected to the satellite 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.