Problem artefact noise video animation

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Hello

I have crackling problems like grain moving, for example, on the sofa in front. Do you have an idea ?

4% noise Ai cpu /  0.65

Thanks you

[TomG]

Just for confirming, is Lock sampling pattern enabled in the Performance tab of the render settings? Also, which version of Corona, Max? Also does "AI CPU" mean the Intel AI Denoiser just to be sure we know which one you mean? Last, would be useful to know which Image Filter you are using (System tab of the render settings).

[smallrendering]

Hello

Yes i have lock sampling balance and Intel AI Denoiser , and the filter is trent

i use corona 7 hotfix 1

Thanks you for help !

[smallrendering]

And 3dsmax 2022