Have some shadow problem in cycles render (low poly mesh with normal map) - Blender Stack Exchange

sorry for my poor English first.. this is my low poly mesh without textures and in marmoset toolbag 3 or blender eevee, the normal map works well but in cycles, light causes strange bar shadow re

3DArtist_Issue_60

Blender Sushi: 2013

Texturing for Beginners: Top 14 Ways to Mix Textures and Shaders

/global/docs/softimage2014/en