Bojji
's very simple to understand point is going a light year above your head.
Scaling the resolution lower would help achieving a high FPS and reduce the need for frame-gen on PS5. The game is GPU heavy, not CPU heavy, going by PC benchmarks. However, it's already running at 1080p in Performance mode so it would require scaling further down. The PS5 Pro also suffers from frame-gen related issues in its 60fps mode because game-science just copied the same config across the two, even if it runs a higher resolution.
Also, Lumen is only disabled on the Performance mode on Xbox, it's there in the Balanced and Quality modes, both of which also run with either higher frame rate and/or higher resolution.
Quality runs at 1296p on PS5 and 1728p on Xbox, Balanced runs on 1080p on PS5 and 1440p on Xbox.