Depending on the LG model and firmware version, one (or both) of these might fix the slow WiFi issues:
1) Open the built-in app, Screen Share, from Recents.
2) Click on Listen Mode.
3) Set it to Off.
The other setting to turn off, is Quickstart (or Quickstart+ on some models)
When done, power off and unplug your TV for 30 seconds, plus back in, and turn on.
If the WiFi is still slower than it should be, ensure it is on the 5GHz band rather than on the 2.4GHz band, as depending on your router and Internet service,you SHOULD be able to get a minumum of 600Mbps with 5GHz (hopefully higher with better routers), but the 2.4GHz tends to max out at 300Mbps. NOTE: this will still be 3 times the 100Mpbs max for the Ethernet LAN cable connection, as there are no 1GBE LAN cards (1000Mpbs) in LG TV sets at the moment as @George Hofmeister says.
If your 5GHz Wifi is still slow, log into your router, and go to the WiFi advanced setup for the 5GHz network, and ensure it is on a lower channel than 100, I find that channel 36 works well in my location, some find 44 is good.
Unbelievable. This worked wonders for my 65SJ8500. I've tried everything to fix this issue with no luck until I stumbled on this post. 5GHZ is 5 times faster! I'm an IT Consultant and I know this stuff inside and out and never would have figured this out.
One thing of interest; Running wifi 6 on Channel 161 and did not have to change it to a lower channel...
Very disappointing Ethernet connection on 55NANO796NE
in LG webOS Wish List
Posted
Unbelievable. This worked wonders for my 65SJ8500. I've tried everything to fix this issue with no luck until I stumbled on this post. 5GHZ is 5 times faster! I'm an IT Consultant and I know this stuff inside and out and never would have figured this out.
One thing of interest; Running wifi 6 on Channel 161 and did not have to change it to a lower channel...
Thanks so much!