@rob5 It is recommended to turn off router WiFi network, leaving just Deco to provide WiFi coverage.

@hot-brush These logs are not very helpful. "We have many devices running on this network." - How many, approximately? Would be helpful if you could make screenshot of Deco app screen for Show List...

@KuroYami This is truly strange for router to miss such basic functionality. Can you share brand name and model number of your ISP Router? Also, while it is really what I don't want to recommend, but...

@Sentinel2A You need to provide more info for someone to help with troubleshooting. Multiple things come to mind: Deco mesh bandwidth settings restricts traffic, device negotiated 10Mbps Ethernet...

@KuroYami The way to resolve this is to configure Deco mesh to run in Access Point mode: How to set up Deco to work in Access Point mode In this configuration, your ISP router will provide IPv6...

@CHF_UK Very helpful summary of investigation. For those who plan to troubleshoot their Deco mesh, you can get quick glance of signal strength for each of your Satellite Deco units, in single place...