It’s quite possible this is running with a reduced color space (chroma subsampling). Degradation happens automatically based on available throughput and most people don’t notice.

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jasomill 5 hours ago | parent [-]

For desktop use? Chroma subsampling is obvious. DSC compression, on the other hand, is not. DisplayPort and HDMI support both.

	▲	archagon 5 hours ago \| parent [-]
		It’s obvious if you use a test pattern and/or know what to look for: https://testufo.com/chroma I had no idea what it was for the longest time. As it turns out, macOS frequently enables it even when it’s unnecessary, and without any way to override.