@NetLearner I assume your Deco is configured to run as a Router, not as an Access Point. Did you consider running it in Access Point mode? Are you sure the LAN IP addresses are exclusively...

@Guyldr Could you not test in AP mode? I suspect that, in Router mode, the main Deco attempts to determine where (on which Ethernet port) is the connection to Internet. It might be waiting to...

@Guyldr Does it behave better in AP mode?

@Guyldr Is the Deco Operational Mode AP or Router?

@baselnama When connecting your computer by cable to the main Deco, you obtain much less than when connecting your computer by cable to the Archer?

@Guyldr If you have a main Deco and a satellite Deco in the same mesh, you can certainly use an Ethernet cable to directly connect the main Deco and the satellite Deco.