They seem to be on the right track. So one of the suggestions they asked me to do was to try in the RS render tag-Geometry-Displacement Type (Vertex or Texture) to try the Texture Type instead. But in the Help for this new(-ish) RS Type it says in a special section that "Displacement Blenders are not compatible with Texture Displacement." And I am using a Displacement Blender. What happens is that when the field washes over, the displacement stays throughout, rather than revealing the smooth polished gold side. It was funny looking at first, but then I read the help, where it said it doesn't work.
Anyway, I seem to have no problem rendering the animated noise displacement individually.

I ended up doing as you asked and sent the issue over to Tech Support. They see what you do. They made a suggestion to try the other type of Displacement (Texture) but that doesn't work because Texture doesn't work with Displacement Blending. I uploaded more renders and debug logs to support, so perhaps they can find something.
Thanks for the wisdom and kindness as always!

Thank you again. I have taken your RS Mix material, and added it to my project. Using the RS Mix, I am getting the same drop-out of the displacement in random frames. I have only one field driving the vertex map for the swapping materials. Both of the noise patterns in the galvanized gold are animating.

I uploaded the complete project to the folder I shared before. Here is a direct link to the subfolder which has the RS Mix swapper in use.
https://drive.google.com/drive/folders/1gopgnSQw0yOK3d0RzFCTklcmL02cf4sT?usp=drive_link

Here is a link to the rendered video:
https://drive.google.com/file/d/1URCBj9XOleSx6ijH6lVjLh_y1hyx0mQE/view?usp=drive_link

And about the priority question, I didn't have a problem with priority to work on, rather, it was just something I recalled about the order of processing that mattered. I wondered if there was such a thing with establishing displacement in RS.

Should I try Saul Espinosa over at the Redshift render forums on FB? He may know if it was a quirk in RS rather than C4D.

As always, I thank you for your prompt response. I have downloaded each of the zips to look at, so you may remove from the server. I rendered your updated single-material version. I understand what you mean about using a single material. But my goal is to make a material that is a simple material swapper (with displacement). Is there something wrong with doing it the way I was that makes it randomly miss the noise on frames? Like when I have a priority problem with rigged parts and the rigged parts don't reset. If I return to frame 0 a couple of times, it fixes. The football project will act similarly. Is there some type of priority problem that affects materials? And again, Thank you!

I am working with an animated displacement, powered by maxon noise, that washes across my model via a vertex map field. The noise is animated. But for some reason, certain frames simply show no displacement, as if it was turned off for a frame, and then is back the next frame. I have placed a project file, a screenshot which listed the 10 or so frames I had to re-render individually (which worked fine btw). I also have a series of 3 frames which show what happens. Rendering on Apple M1 Max 64gb Sequoia 15.7.3. C4D 2026.1.2 and RS 2026.2.1.
I am trying to figure out if I am doing something I shouldn't be.

Cineversity - Maxon Noise Error Google Drive
https://drive.google.com/drive/folders/1u89N7XaKtHIPI6wx-UHuPWp_KIX5Tfym?usp=sharing

Firstly, your help and instruction is invaluable. You have to be the most patient and kind trainer on earth. That being said, I ended up using the textures with the triplanar off and used the UV tag inside the nodes to fix my current problem, and I think it is working well. Your explanation of how points could change in the Alembic was something I was guessing at, but didn't truly understand. I plan to experiment with the triplanar, baking UV's, and your latest noise breakdancer from mixamo. All of this current problem came out of a project where one person animated a character (character object) in one project, but then we were trying to place it into tracked footage. However, we couldn't seem to move the rigged character animation to a different area of the scene. This is probably evidence of another gap in my learning. So the alembic was used to store the motion, but there was probably a better way.
Thank you again for your responses Dr. Sassi, I won't take up any more of your time this year! -Ha!

I want to thank you for this, not only the quick timing, but the quality solution. Your idea does work with the triplanar modification removed in my actual project.

If I had to use a triplanar in my material, is there a way for that to work? No need to respond immediately, and thank you Dr. Sassi!

I have a material which doesn't pin or stick under certain circumstances. I have been working on solutions for days. I have created a simple precise example scenario to show you. Unfortunately, I have to begin at this step, rather than from an earlier point in the process. It has a baked alembic animation of a human puppet walking. If I place a material with a maxon noise, it doesn't stick/pin to the alembic. Is there a way, beginning with the linked project file to attach the material and it not move/swim across the object as it moves? I have tried pin material tag, RS Object-Geometry Reference, and mesh deformers, but was unsuccessful. Can you help?

Texture Swimming Project File Google Drive Share
https://drive.google.com/drive/folders/1bosIBswPraJzF34SJVJHt6tBpGBfl5t5?usp=sharing

There are 2 video files inside the folder, of the current outcome, and the desired outcome. While I understand that I can make it work (evidenced by the desired outcome video), I have to learn how to work with only the baked alembic source file, rather than the entire original project.

Thank you.
Cinema 4D 2026.1.0 RS 2026.2.1 MacOS 15.7.3 M1

I was the one who originally made this post and ticket. I was able to visit error free on AT&T and Lumos Fiber/T-Mobile fiber a couple days after the error was reported in Brazil. I am on the east Coast USA. Thank you Dr Sassi.

I just checked on my end, T-Mobile ISP. I cleared cache, Chrome new incognito, disabled cache in networking and it fails again. This time I can’t get to the main page. The cookie question pops up, but the moment it does, the white screen replaces it (with only the cookie-question icon showing). Firefox works fine.
In closer inspection, a dynamic JavaScript, “CuKSISK.js” lists a content-type: text/javascript in Firefox, but in Chrome, the same js has no listing for content-type in the response headers.
The dynamic script names change every now and then, but the same issue of not listing a content-type for one or more scripts in response headers is consistently present in Chrome. I have sent such logs/screencasts/etc. to support.