I've heard these things either work or they don't. They worked for me. Setup was super easy. Connect one side to the router and the other side to the 4K TV. Boom, the streaming device is disconnected from my WiFi network. It is important to remember that you must insert the plug directly into the outlet. No more cheating by plugging into an extension cord. The two plugs were also fairly close together. I'm sure every mile will be different, but this is a great article to help keep chatty devices off WiFi during a pandemic.
Wi-Fi adapter D-link DWA-140, black
46 Review
Enhance Internet Speed with TP-Link AC1200 Wireless Dual Band USB Adapter (Archer T4U V1)
40 Review
Enhance Your WiFi Range with TP-Link TL-WPA4220KIT 300Mbps AV500 Powerline WiFi Extender Start Kit
37 Review
TP-Link Archer T4U Plus AC1300 USB 3.0 WiFi Network Adapter
29 Review
π uni USB C Hub with Ethernet Adapter, 4K HDMI, Gigabit Ethernet, and 3 USB 3.0 Ports for MacBook Pro, iPad Pro, XPS
11 Review
π USR-TCP232-410s: RS232/RS485 Serial to Ethernet Adapter/IP Device Server with DHCP/DNS Support
4 Review
π CERRXIAN RS232 to Ethernet Serial Device Server - TCP/IP Converter with 1Port DB9 RS232 Serial to Ethernet Connectivity
3 Review
π StarTech.com NETRS2321P: 1-Port RS232 to Ethernet IP Converter, Serial over IP Device Server - Black
5 Review