The issue with this is any light i place down in a room will bleed through the walls onto the ceiling and floor on the other side of them the images will better show this.
Ue4 light bleeds through walls.
Please use spotlights if you require shadows from artificial light sources see section 5 below.
Place it just behind your wall so that it blocks the light from leaking out.
Home bleeding light bleed lighting lighting going through objects shadows ue4 unreal engine unreal engine 4 ue4 lighting goes through walls unknown senin 15 agustus 2016.
Lightmap common problems and solutions.
Set the point light s baking property to mixed or baked then bake your lighting data using the lighting tab.
One of the common bleed problems is connected uv edges where the geometry takes a change of direction which would cause a light change on the object.
The light from omni lights fill lights and area lights passes through models and does not cast shadows.
Bleeds caused by connected edges.
Lightmap resolution for static meshes and bsp udk.
Note that this will take a long time depending on the size of your scene and the number of lights 3.
This is a known technical constraint and is also due to performance considerations.
How to fix lightmap light shadow bleeding and seams udk.