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[SHADOW PROBLEM] - Lightmap UV?

Hello, I am starting to use the Unreal Engine recently. I’m using SketchUp and 3dmax to model the geometry, but am having trouble with the shadows that are “leaked” or weirdly. I’ve done the unwrap in 3dmax and put the UV mapping on channel 2, still continue with the strange shadows. Attached pictures to illustrate my difficulty

Any help is welcome

Increase the lightmap resolution of your ground :slight_smile:

Thanks fighter!