Smear added to render - extra step?

[recording-team]

Having an issue with what looks like an added step (like before), but this time, there is no option on the Global/Color Management tab to disable. I would like the entire image to be crisp and clean, and at the very end of the render, the mid portion get splotchy/cloudy spots. How might I keep the entire image nice and clean without those areas?

Here's the cloudy image

https://www.dropbox.com/scl/fi/5niplqpsqukpkxavfa2t3/cloudy.jpg?rlkey=6kohrz7cn4po3o8fo4wsnjssx&st=sdn7isa2&dl=0

and here's the scene file:

https://www.dropbox.com/scl/fi/p3g0zxmz23vl7tjsvmmt2/round-advect_v2b.c4d?rlkey=hr1daun2rwnfhclja0uibxsfp&st=fg9tx9c7&dl=0

Thanks for any info.

[Dr. Sassi]

Hi recording-team,

Thanks for the file.

The mid-portion of image 0137 or 0150 (see URL below) seems clear.
https://stcineversityprod02.blob.core.windows.net/$web/Cineversity_Forum_Support/2024_PROJECTS_DRS/20240918_round_advect_v2b_0137_0150.zip

Perhaps your graphic card allows for a different Noise reduction,. This would be the only idea I have left. I tested all other options. Noise reduction is applied (AFAIK) after the Rendering: Render Settings> Redshift> Sampling> Denoising.

Let me know if the Denoise set to off helps. It is just a wild guess.

Cheers