Part two: A working example file
Here is a freshly downloaded Mixamo animation, turned into an abc file.
I used this motion capture as it has dramatic changes, perhaps better than I could do with my Motion capture setup.
The TriPlanar is set to Reference, and the RS Render Tag to Snapshot.
The geometry is stable, e.g., in point and polygon count.
I think the Noise is pretty stable.
https://projectfiles.maxon.net/Cineversity_Forum_Support/2025_PROJECTS_DRS/20251229_CV4_2026_drs_25_RStr_01.zip
Preview render
https://projectfiles.maxon.net/Cineversity_Forum_Support/2025_CLIPS_DRS/20251229_CV4_2026_drs_25_RStr_01.mp4
All works fine on my side.

Thank you very much, appointment-insect, for your reply.

It was a long story to fix, meaning, thanks for your patience and keeping it so super professional, even I know how frustrating that was.

There is a quality in this thread despite this annoying problem, that makes it all very motivational to do these things here. Thank you for that.

Enjoy

Hi appointment-insect,

Thank you for your reply.

The Texture and the Ramp node have options for using a specific UV tag. I mention both, as they use a different name for the field. Uv-Channel for Texture and Texture Space for the Ramp Node.
https://help.maxon.net/r3d/cinema/en-us/Default.htm#html/Ramp.html?Highlight=ramp%20
https://help.maxon.net/r3d/cinema/en-us/Default.htm#html/Texture+Sampler.html?TocPath=Shaders%257CTexture%2520Shaders%257C_____13

Here is an example
https://projectfiles.maxon.net/Cineversity_Forum_Support/2024_PROJECTS_DRS/20241017_CV4_2025_drs_24_RSuv_01.zip
Select the Texture or Ramp Node, and while the Redshift render is active, drag different UV tags into the fields.

My best wishes

You're very welcome, appointment-insect!

The Developer Café is a special forum for people who develop for and with Maxon Products.
https://developers.maxon.net/forum/

Off-Topic
Thanks for asking

I checked with DJI and got no positive reply or solution for this FAA requirement.
Besides, the FAA has not replied on how to renew my registration, and no devices are easy to get.

Weird times. My pilot license also needs a renewal, so I'm more or less "grounded" right now. 😉

Cheers

Hi appointment-insect,

Thanks for the demo.

Here is a scene file that allows us to see a fresh start; I have placed a Mesh Object to it for precise comparison. When this works, we can take a look deeper. Use a new scene for new tests.

CV4_2023_drs_23_SIsc_01.c4d

I would just start over; I have tested this scene with 2023.1 and 2023.2, just in case. The pale-greenish shape should be the same. The Triangle is just another check.

Screen Shot 2023-09-09 at 10.28.58 PM.jpg

Let me know if that works for you.

All the best

P.S.: I hope an affordable device for your DJI drone will be soon available. (I have the same problem, but my pilot license needs renewal, so I have no time pressure currently.)