I just bought a Sony X90J and and i have the Roku Ultra conmnected to HDMI 3 which supports 120z and Dolby Vision, which i did set up the NDMI for. But the Roku is only showing, through Auto Detect, upto 4K HDR @ 60fps. Netflix does use Dolby Vison, but only shows HDR when through the Roku. I alos tried in HDMI 4, where my console is located, and it registers the same. to add, I am using Ultra HDMI High Speed HDMI's.