hi @AtAshTag ,
There is a possible answer in another post
Lighting on Xbox broken - General / Issues and Bug Reporting - Epic Developer Community Forums
The problem with “Rectangular lights create a glaring brightness on some platforms” has been present in Unreal Engine 5 from the beginning, pre-2018, when GPU baking was developed.
Now with UE 5.7, UEFN 37.* onward, the same lighting potential problems.
We recommended Using the Emissive Material Input in Unreal Engine
There is a new documentation book on lighting to download
Download the ‘Lighting in Unreal Engine 5 for Educators and Students’ guide