Quote:
Originally Posted by SithUK
Is there a performance impact from chroma upscaling when watching 1080p at 1080p, ie if there is no upscaling?
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Yes, chroma upscaling is needed on all videos where the chroma resolution is lower than the luma resolution, which is pretty much any video you're likely to encounter. Most content uses 4:2:0, which means the chroma content needs to be scaled to twice its original size to match the luma. On 1080p video, this means scaling from 960x540 to 1920x1080.