The Medium Patch 1.2 Introduces UltraWide and Super UltraWide Support, Performance Improvements and More
https://wccftech.com/the-medium-patch-1-2-ultrawide/
A new The Medium patch is now live on PC and Xbox Series X and S, introducing new features, performance improvements, and more.
The 1.2 patch introduces UltraWide and Super UltraWide resolutions support on PC. According to the team, implementation was complicated due to the game's design.