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I'm working on a indoor scene in Cycles Blender 2.90 with the Nishita sky as light source coming trough the windows.

For the glass material I used Blender Guru's glass hack, but I'm sure the glass isn't the problem since I get the same noise without the windows in the scene.

I do use portals for the windows and I have even cranked the samples up to 4000, still I get a lot of noise.

I do not want to use the denoiser since I think it removes to much details and I get artifacts with this level of noise.

I would really appreciate if someone could have a look at my scene.

This is how noisy my scene look with 2000 samples (this images is 50%, look even noisier at 100%

enter image description here

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  • $\begingroup$ Looks about right. You can render passes and use denoising only on the passes you need it on. If this is unusual, how noisy are your usual interior scenes? $\endgroup$
    – Martynas Žiemys
    Commented Oct 16, 2020 at 22:11
  • $\begingroup$ The intel denoiser actually works very well at preserving details if you turn on the denoising data pass in passes. $\endgroup$
    – Eric Xue
    Commented Oct 16, 2020 at 23:56
  • $\begingroup$ my usual interior renders are not this noisy at all. I tried the intel denoising but I kind of got a slight oil painting effect $\endgroup$
    – Rock
    Commented Oct 16, 2020 at 23:59

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