How to get Unreal Engine 4 level Performance in Unreal Engine 5!
https://dev.epicgames.com/community/learning/tutorials/7238/unreal-engine-ue4-level-performance-in-ue5
it’s nice. but sounds like you’re guessing a bit.
disabling lumen on the settings doesn’t do much unless you also set up static lighting. maybe you might want to add a post process volume with unlimited extents and disable lumen there too.
possibly also disable raytracing with “support hardware raytracing”.
it would have been nice if you included other things like baking lights, allowing static lights, and disabling world partition (with warning).
also setting up baked lights, at least an overview.