Denoiser creating random blurred patches in the render

[basafath21]

I am trying to create an interior animation with the noise limit set to 0.01. When I render the frames, I seem to get random blurred patches in some areas.

Is there some way I can fix this?

[Alexander.Atanasov]

Hi basafath21,

Do you have Reduce flickering enabled? Sometimes it can cause such blurriness in random areas.

Best regards,
Alexander

[npg]

This is a known issue with the Nvidia AI denoiser - it blurs some areas of fine geometric or bumpmapped detail that is noise-like. We have something in the works that should help with that, but it will be several months until we're ready.

There isn't a very good workaround currently. You can just try using more samples or maybe even a higher render resolution, hoping the denoiser can finally resolve this area.

[pixelpure_3d]

I am trying to create an interior animation with the noise limit set to 0.01. When I render the frames, I seem to get random blurred patches in some areas.

Is there some way I can fix this?

I had same issue in my animation, I disable denoise and it's fine now

[it_dept2]

It's still happening, any updates?

[npg]

Try the Intel denoiser. If you're rendering an animation it could flicker though, because it doesn't yet support temporal stabilization.