On macOS systems, neither Corona 13 nor 14’s denoising mode supports Intel CPUs. Moreover, the noise reduction quality and speed of Corona’s High Quality mode are inferior to those when using Intel CPUs, with anomalies at edge details being particularly noticeable. Could you please let us know when …

[image] maru: The CPU version of the Intel AI denoiser should work on Mac OS regardless of CPU model. Can you explain what exactly you mean by “neither Corona 13 nor 14’s denoising mode supports Intel CPUs”? Are you getting some error message? Or perhaps the denoiser doesn’t work at all? Regard…

For interactive or production rendering?

[image] maru: For interactive or production rendering? Hi Maru, The problem occurs during production rendering. The Intel denoiser works as expected on Windows (with the same Intel CPU), but on macOS, selecting the Intel denoiser doesn’t work at all.

And once you stop rendering, the Intel denoiser effect isn’t applied either? (sorry, just making sure that I understand this right)

[image] maru: And once you stop rendering, the Intel denoiser effect isn’t applied either? (sorry, just making sure that I understand this right) Yes, that’s right.

[image] maru: And once you stop rendering, the Intel denoiser effect isn’t applied either? (sorry, just making sure that I understand this right) Hi Maru, Previously, someone encountered the same issue as me. https://forum.corona-renderer.com/ Intel CPU/GPU AI denoising not working in M1

Just a quick update on this: We are checking this internally. Will update you as I find more info about this.

I was able to repro this and have reported it internally for our devs to investigate and fix. (Report ID=CC4D-1135)

[image] Avi: I was able to repro this and have reported it internally for our devs to investigate and fix. (Report ID=CC4D-1135) Thank you. Hope this can be fixed in the upcoming preview builds.

Denoising Issues of Intel CPUs in Corona 13/14 on macOS and Inquiry About Fix

Corona Corona for Cinema 4D Corona for C4D :: Previews (Daily Builds)

san_yang August 20, 2025, 9:04am 8

Hi Maru,
Previously, someone encountered the same issue as me.

https://forum.corona-renderer.com/ Intel CPU/GPU AI denoising not working in M1

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Denoising Issues of Intel CPUs in Corona 13/14 on macOS and Inquiry About Fix

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