New Vizio TVs use motion smoothing to make the content appear smoother.
Motion smoothing works by increasing the framerate of content you watch on the TV. […]
However, it does not seem to be the case that the image is refreshed , this does not always look good, and often leads to blurry images and nasty artifacts.
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How to Turn it Off
On Vizio TVs, open the settings menu, select "Picture," and then switch to the "Advanced Picture" tab. Here you can set different levels for the "Smooth Motion Effect," like adjusting how much interpolation and motion blur is applied.
On some TVs, you may find the Picture Mode> Advanced Video Features.
If you have an older TV with the feature, you may want to consult your TV's manual.