@MichaelFray Deco M9 Plus Ethernet port is for Main Network only. If Phillips Hue bridge is the only device you need to connect by Ethernet to Deco, one of the possible workarounds is to flip Main...

@Kooven Before focusing on Deco mesh, you'll need to check quality of your cable Internet. Connect PC directly to Arris SB6190 by Ethernet cable and run your tests in that configuration for at least...

@FloSun TP-Link Archer uses OneMesh technology for WiFi mesh, which is not the same as Deco mesh. You can't make one seamless WiFi mesh from both. If you can, replace Deco P9 with TP-Link OneMesh...

@JLChip Deco M9 Plus has gigabit Ethernet ports. You will not get speeds faster than gigabit with Deco M9 Plus, even if it is connected to 10Gbps router. This is what you should expect to see for...

@sensei_ishikawa Try workaround: enable Guest Network, set it as 2.4GHz only, connect all 2.4GHz only wifi devices to Guest Network. For each of 2.4GHz stationary devices, turn off "Mesh" in Deco...

@JLChip How do you measure the speed with Deco M9 Plus and what is your Internet speed? If you use "Test Internet Speed" in Deco app, there is known issue with reporting, not with actual speed. It...