Track was build in Blender 2.82 I create the Tree group by particle system and make sure each one is separate objects(apply modifier) and objects...
problem solved! out of my expectation, it's the "scale" problem didn't know why it affect on shading, but when I apply scale by Ctrl+A and make...
I was build a project on Blender 2.82 the track surface was looking smooth and good in the blender [IMG] but when it when into ks editor, ramdom...
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