https://www.techradar.com/news/samsung-brings-freesync-smooth-gaming-to-some-of-its-4k-tvs

What's more important for your gaming sessions: high resolution, or buttery smooth frame rates? If you fall into the latter camp, and own one of a select group of Samsung 4K TVs, then there's an update tailor made for you headed your way.

Samsung has begun rolling out an update to some of its 4K TVs that introduces support for AMD's FreeSync variable refresh rate technology. That allows for reduced screen tearing and lower input lag by matching the number of frames produced by your machine to the number of times your screen is refreshing.