Microsoft and Intel partnered to address Alder Lake's compatibility issues with the DRM software used by many popular AAA games. As of today, only three games still have problems when efficiency cores are enabled. One of those, however, is Assassin's Creed: Valhalla.
https://www.notebookcheck.net/Most-of-Alder-Lake-s-game-compatibility-issues-have-been-resolved-by-Intel-and-Microsoft-but-Assassin-s-Creed-Valhalla-still-doesn-t-work-properly.583390.0.html