Unreal 4 Lighting Academy....or something like that ;)

I appreciate the tip however it’s still not perfect. I’m getting better results in some cases but still getting shifting and dark patches where there shouldn’t be. All the UVs in this view are snapped to a grid of 1/62 and each UV shell has 2 grid points between them.

Lighting quality was set to high, lightmass settings attached.

Any ideas?