The Xbox Series S is the lower-end and cheaper version of the Xbox Series X. One difference is that it has less processing power and renders games up to 1440p instead of up to 4k like on the Series X.
Xbox Series S Settings - 1080p 120hz, VRR On, HDR Off. MW2 Settings - 120hz, 120fov, FidelityFX CAS Strength 100.
