YouTube serves you blurry video on purpose. The Auto setting will keep you on a worse stream even when your internet can handle more, and the algorithm making that call is protecting a number you've never seen. Start with what "1080p" actually means, because it means less than you think. Resolution is just the pixel grid. Bitrate is how much real detail gets poured into those pixels, and YouTube's standard 1080p carries about 8 Mbps of data while a 1080p Blu-ray carries up to 40. Same label, a…