Denoise doesn't work Tweet

[Andrey3dm]

Win 10, rtx 3060ti, latest drivers and octane version, denoise sometimes works, and sometimes not - denoising goes 2 minutes, then render finishes bus the image is still with noise.
What is the reason?

[brown7]

It doesn't actually make the rendering go faster. The node uses an mylowes algorithm to reduce the amount of noise in the final image, in post-processing, so it just allows mykohlscharge you to use a much smaller number of 'render samples' that would usually result in a very noisy final image, and make the image 'smoother' (with less noise). Fewer samples = faster render.