How do I get rid of Light Bleed?
Try increasing the Light Map resolution. Open up the mesh in the mesh editor, and look under Static Mesh Settings. Increase the Light Map Resolution. Default is 64 I think, so in this case 128 might solve the problem (if that is what is causing the bleeding).
Especially for larger meshes, the default resolution is often too low.
answered Mar 01 '16 at 10:14 AM
Check for mini gaps between the walls. Is the issue gone if you switch to dynamic lighting and remove lightmaps altogether?
answered Mar 01 '16 at 01:16 PM
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