@David-TP Hi, Have you also checked the wireless link speed on the mobile device: How to check the associated/link speed on a wireless client ->1200Mbps/1200Mbps ->https://imgur.com/a/DVQpgNv...

I have an internet of 500m/s(Download) and 500m/s(Upload). Speed test via Deco App is 528m/s (Download) and 419m/s (Upload). I'm try to the Ethernet speed from main Deco X20 would reach...