The HDMI Forum, responsible for the HDMI specification, continues to stonewall open source. Valve’s Steam Machine theoretically supports HDMI 2.1, but the mini-PC is software-limited to HDMI 2.0. As a result, more than 60 frames per second at 4K resolution are only possible with limitations.
10bit colours?
No, bad transcoding settings while ripping. Lycoris Recoil is especially bad, 1.5 GB per episode while 300 MB mpeg is usual. Ah, to note that the lossless encoding they use on DVDs is over 6 GB per episode.