Lighting & Rendering Issue | Assets Migrated to a Blank UE5.1 Project

Hi everyone,
I’m preparing a build of my proto and since two days I have a problem.
I’ve migrated most of the playable level to a clean UE5.1 project installation and after completing the migration, I’m having problems with the lighting: let me xplain. The scenes are identical in every way on the original project and on the newly created project, however without having made any system adjustments, the scene looks darker on the newly created project, and on one of the levels there are incomprehensible glitches in the scene.
Here are a few visuals to give you an idea