Anyhow, a few reviews I read recently suggested that LG are good TV's but they don't have a good reputation as smart TV's. So, I took an Amazon Firestick from another TV we hardly ever use and put it on the one with the issues. Problem solved. I'm supposing the stuff inside the Firestick is better than the stuff inside the LG smart TV? Might be worthwhile if you experience the same problems with buffering. As a bonus we have the Xray and Alexa on the main telly.