How to solve this bad texture ?

Hello

Could anyone explain why this problem happen ?

I experience bad surface in Cycles but it looks fine in EEVEE


1. I try to checked normal


2. Already merge by distance 



But problem still there 

What's wrong ? Is there any way for quick fix this surface ?


Thank you very much

  • adrian replied

    Hey kwin

    Have checked the material itself?

    Can you share the file via dropbox or similar to take a closer look?

  • Kwin K(kwin) replied

    Hi Adrian
    Thank you very much for helping.
    Yes, finally I can fix it by checking material and delete duplicated mesh.

    Then problem is solved.