**Unless you have an older Apple TV 4K and/or a TV that's not manufactured from the last 5 years or so, do NOT follow the instructions below.
With the newer 4K TVs and especially paired with the newer generation of AppleTV, leave the Dolby Vision ON and leave Frame Rate Matching OFF or you will have audio sync issues. Newer TVs are already smart enough to detect frame rate so no need to do any of the instructions below.**
The most prevalent issues as of this writing when using an Apple TV 4K with an A/V receiver: