May very well be utilizing an older HDMI, however in case you use the included one with the Xbox, it must be good.
However a pair issues, is the TV or Xbox new? Ensure each have the newest firmware.
Additionally, verify HDMI ports, some TV’s solely have 4K 60 on 1 port, so ensure you’re within the right one.
Additionally, in case your TV has a setting to show off or on the hdr or Dolby imaginative and prescient, be sure that they’re on.
Lastly, its on my LG television, unsure about sony, but when there’s a setting like deep darks or one thing, be sure that it is on. Sorry, simply had again surgical procedure and may’t get right down to my television to confirm proper now.