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Disclaimer: I looked at similar queries regarding black spots. None of which addressed the issue I am currently having.

As shown in the images, black smudges and lines appear in a variety of areas. I believe it has something to do with the emission lights I have on the ceiling. Since the black spots on the wireframe move to a different face depending on the camera view.

Things to note: I am using cycles render with GPU support

Fixes I have tried: I have fixed all non-manifolds. I have deleted all loose geometry. I have recalculated normals on the outside of all questionable objects.



  • $\begingroup$ can u provide blend file? $\endgroup$
    – Chris
    Jul 10, 2021 at 3:12
  • $\begingroup$ Does this answer your question? Why is my render noisy/blotchy? $\endgroup$
    – Emir
    Jul 10, 2021 at 4:40
  • $\begingroup$ Here is the file: <img src="https://blend-exchange.com/embedImage.png?bid=4Oe7AOmw" /> $\endgroup$
    – mrabysmal
    Jul 10, 2021 at 7:01
  • $\begingroup$ The fact that you say they’re appearing “at the end of render time“ seems to indicate it’s a compositing error. Is this possible? $\endgroup$
    – TheLabCat
    Jul 10, 2021 at 15:42
  • $\begingroup$ ZargulTheWizard - Great point, I'll look into this, thanks $\endgroup$
    – mrabysmal
    Jul 10, 2021 at 20:06

1 Answer 1


It turns out the Freestyle setting checkbox was ticked on in the Render Settings. Make sure it is disabled.

  • $\begingroup$ Hi, thanks for the answer, I have restored you post. This site is not a regular forum, answers should be substantial and thoroughly explain the solution and required workflow. One liners and short tips rarely make for a good answer. Could you edit your post and provide some more details about the procedure and why it works? Perhaps add a few images illustrating the workflow and final results. See How do I write a good answer? $\endgroup$ Jul 12, 2021 at 9:41
  • $\begingroup$ In the future, issues about moderation or site actions should be brought up over at blender.meta.stackexchange.com . Thanks $\endgroup$ Jul 12, 2021 at 9:42

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