I have been able to connect several times BUT not always reliably and it is frustrating. I have the latest WIN 10 with all of the updates. I also have a very reliable connection method using Chromecast which is a dongle installed on one of the TVs HDMI ports, HDMI1 in my setup. Using Chromecast I cast, (using Chrome), the desktop of the PC to the TV and the TV then mirrors what is displayed on the PC, laptop. The only problem is I have to deselect the HDMI1 port and reconnect the TV using the TV remote when I am done casting. I did find that if I SW the PC between the 2.4Ghz & 5Ghz or vice versa that the TV would connect SOMETIMES but not always. I set the LG TV for Miracast.
I would suggest that folks use this method which I find reliable until LG gets a fix for the WI-FI connect problem. https://store.google.com/product/chromecast_ultra
Another advantage of the Chromecast dongle is that I can quickly switch back & forth between the LG TV Cable box and the HDMI1, (my Cast dongle is on HDMI1), port for my PC laptop by using the LG TV remote.