Yeah...8bit@4:4:4 color depth. We are talking about 4K120Hz@10bit@4:4:4 and HDR. Therefore the HDMI 2.1 device needs to support at least 40 Gbit/s...I did, you re-read it. Then read the little (a) after data rate required, and the little a. at the bottom.
Pls watch and learn: