Sea of Thieves is 4K/60fps on Xbox Series X, Only 1080p on Xbox Series S
https://wccftech.com/sea-of-thieves-xbox-series-x-4k-xbox-series-s-1080p/
Sea of Thieves has been Microsoft’s most successful game of this current generation, attracting over 15 million wannabe buccaneers, so one can’t help but wonder how the pirate game will carry over to the Xbox Series X and S. Sea of Thieves isn’t getting a full visual revamp like Gears 5 and some other Microsoft-published games, but Rare has revealed some of the basic enhancements you can get by playing the game on Xbox Series X and S via backward compatibility.
Excited about setting sail on Xbox Series X or Xbox Series S? These are the key optimisations for your next-gen Sea of Thieves experience, so get set to enjoy some silky-smooth skelly smashing: