I am trying to play the Ken Burns videos "The War" and "The Dust Bowl", both series are made in 1080p H265 10bits 29.7Hz, Color Space=YUV and Chroma subsampling=4:2:0, box trying to load the video without success. Same can be said with "Journey to Space" by boeing & Toyota, format is 2160p H265 23.976Hz, 10bits YUV & 4:2:0. I can play HDR H265 10bit videos from demo-uhd3d.com. Also, my X8/X9S has no issues with the videos mentioned above.