@KTW0 Does that modem comes with 2 in 1function such as WiFi enabled? Could it be your modem is also a router and is broadcasting WiFi SSID? might cause interference? If not, I suggest you to reset...

@chls_84 Have you tried using the IoT network? Perhaps you could turn on the IoT network 5Ghz, and see if your TV is able to connect while at the same time turning on the 160Mhz.

@Elmgee Have you check with your ISP, does it requires specific VLAN ID tagging for the internet to be able to connect? On my Deco X50, I am able to see that there are certain ISP profiles which...

@Frederiek Have you tested the speed directly from that node despite it shows weak signal even after backhauling it with ethernet? Try plugging in a laptop and run a speed test to check the speed. If...

@KTW0 Check the security authentication mode from your Deco's SSID, is it using WPA3? Try setting it to WPA2.

E4 WAN/LAN port only supports 10/100mbps speed. Time to change the E4 to something that can support up to 1Gbps for WAN/LAN port. Recommended to use WiFi6 or 7 generation.