Buffering on LG TV

Is there an OS update for the LG TV that might fix this possible WiFi issue?

You could hard wire your TV to your router using Powerline Ethernet adapters or DECA adapters. See links below.

https://community.tablotv.com/t/powerline-ethernet-adapters-great-way-to-hard-wire-tablo-to-your-router/

https://community.tablotv.com/t/deca-ethernet-to-coax-adapter-very-cheap-way-to-hard-wire-tablo-to-your-router/