A:Answer Hello! Your Roku-branded TV will always seek to play at the highest quality that content offers and this cannot be disabled.
However, it is possible to modify how HDR or Dolby vision content looks. To do so, begin playing your favorite movie or show, press the star (*) button and adjusting the picture settings to your preference. For example, Dolby Vision has several modes (Dolby Vision Dark, Dolby Vision Bright, Dolby Vision Normal). We hope this helps!