I'm now the proud owner of the new Xbox Series X and originally came from the PS4 Pro.
But now I've noticed that many older games that I played on the Ps4 Pro now look significantly worse on the X series. Examples are e.g. Tekken 7, jurassic world evolution or Anthem.
On the Ps4 Pro there were extra "improved updates" for the PRO version. On the Xbox, the games are marked with the note "Xbox one X enhanced". Is the One X optimization? Not available on Series X? There's probably. A possibility in the settings to activate this?
This symbol is displayed for the games in the menu: X | S. This means that the game is optimized for the Xbox Series X and S. If this is not the case, they are not optimized for the next gen consoles.