Training Livestream - Lighting Techniques and Guides - Jan 24 - Live From Epic HQ!

Just so… for once and for all… (/me looks at the anwerhub and forums)

, can you adress the following?
How to avoid seems on modular walls/floors/ceilings.
(in other words, lightmap settings, lightmap unwrapping, lightmap rendering settings, vertex normals, normal maps etc)