The biggest mistake people make when trying to fix their lip sync problem is to start mucking around with the advanced settings. This will only make the resolution worse. Instead, set the TV to a lower resolution. If your TV supports 1080p, set it to 720p, which should fix the problem for most people.The first thing you need to do is make sure you have the latest software for your TV. If everything has been updated, then you’ll also need to make sure your speakers are working properly. You can do this by plugging in a set of headphones or sending audio to a different speaker.