That's not really the full story, when this is about displays. I currently have a display that requires Displayport 2.1 to get everything out of it, and with DS

That's not really the full story, when this is about displays. I currently have a display that requires Displayport 2.1 to get everything out of it, and with DSC and DP 1.4, I can get a "theoretical bitrate" that is higher than what they would normally allow. (Of course, this doesn't change what the link can do, it just allows you to do more with the same bandwidth) On thunderbolt 3 systems, the link is on HBR3, which with DSC allows 120hz, 10bit at 7680x2160. No DSC support limits the refresh to 60hz and 8bit (as then you won't have the higher rates available anyway, since DSC is mandatory with newer standards). You can check https://tomverbeure.github.io/video_timings_calculator https://tomverbeure.github.io/video_timings_calculator to see what is possible.