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.
Thank you so much for this fix! Did the trick for us - gone from 0.5 to 100Mbps after disabling Screen Share (press the sources button - took me a while to find this as it's not in the Settings) and restarting the TV. Never would have guessed!
Super slow internet (WiFi) when streaming
in LG webOS Smart TV Questions
Posted
Thank you so much for this fix! Did the trick for us - gone from 0.5 to 100Mbps after disabling Screen Share (press the sources button - took me a while to find this as it's not in the Settings) and restarting the TV. Never would have guessed!