I faced the same problem and after going through so many proposed solutions online, I found the answer to my problem. The Screen Share feature of the LG Smart TV is interfering with the wifi signal, causing it to go from 200Mbps to less than 2 Mbps. After turning it off, the problem has gone away.
Super slow internet (WiFi) when streaming
in LG webOS Smart TV Questions
Posted
I faced the same problem and after going through so many proposed solutions online, I found the answer to my problem. The Screen Share feature of the LG Smart TV is interfering with the wifi signal, causing it to go from 200Mbps to less than 2 Mbps. After turning it off, the problem has gone away.