Octane 2027.1 Alpha 3 for Cinema4D - 2.0.0 - Alpha Release

[lhy2495724656]

The purpose of this request is not to remove the 2027 real-time neural renderer. I would simply like the GPU display path and the neural rendering mode to be independently selectable.

Isn't it the case already ? In the latest alpha build, I can use the traditional rendering technique and click the little lightning on the left to activate or deactivate real time neural rendering...

Thanks for the reply. I think I did not explain the issue clearly enough.
I know that the lightning button can be used to enable or disable Real-time Neural Rendering.
The problem is not that I cannot switch back to traditional rendering.
The problem is the display quality of the traditional Live Viewer.
Since Cinema 4D 2025.2, the traditional Octane Live Viewer has appeared noticeably blurry on my system. The image sharpness does not look correct. This is a viewer/display issue rather than a problem with the Path Tracing result itself.
When I use GPU Texture Viewer, the Live Viewer image becomes properly sharp again.
So what I am looking for is specifically this combination:
GPU Texture Viewer ON
Normal progressive Path Tracing ON
Real-time Neural Rendering OFF
At the moment, I can either use the traditional Live Viewer with normal Path Tracing, but the displayed image is blurry, or use the GPU Texture Viewer and get the correct sharpness, but then the realtime neural rendering path is involved.
So I am not asking how to disable Real-time Neural Rendering. I would like to keep the GPU Texture Viewer display path while using traditional progressive Path Tracing.
That is the distinction I was trying to describe.
I previously reported the traditional Live Viewer blur issue here:
viewtopic.php?p=444234

[lhy2495724656]

Hello OTOY team,
I would like to request that Toggle GPU Texture Viewer and Real-time Neural Rendering be independently controllable in the Cinema 4D plugin.
Current behavior
In OctaneRender 2027.1 Alpha 3 for Cinema 4D / Plugin 2.0.0, enabling Toggle GPU Texture Viewer appears to put the Live Viewer into the real-time neural rendering path.
The Imager > Realtime Denoiser panel does not provide an Off / Disabled option. It only provides a Quality Mode selector with:
- Max Quality
- High Quality
- Balanced
- Max Performance
- Ultra Performance
So there is currently no way, from this UI, to keep the sharper GPU Texture Viewer display while returning to normal progressive Path Tracing.
Why I need this
The traditional Live Viewer display has appeared noticeably blurry for me in newer Cinema 4D versions. I have experienced this since Cinema 4D 2025.2.
The new GPU Texture Viewer greatly improves the display sharpness, which is very useful even when I do not want neural rendering.
For look development and technical comparison, I sometimes want:
- the sharper GPU Texture Viewer display;
- normal progressive Path Tracing;
- no real-time neural reconstruction;
- normal render-pass access such as DeMain (Denoised Main);
- a stable reference image for evaluating lighting, materials, fine texture detail, reflections, DOF, hair and SSS.
Requested behavior
Please separate the two functions:
Use GPU Texture Viewer
This should control only how the Octane render result is transferred and displayed inside Cinema 4D.
Enable Real-time Neural Rendering
This should independently control whether the neural real-time rendering pipeline is active.
Ideally, these three combinations should be possible:
- GPU Texture Viewer OFF + normal progressive rendering
- GPU Texture Viewer ON + normal progressive rendering
- GPU Texture Viewer ON + Real-time Neural Rendering
The middle combination is the one currently missing from my workflow.
Related Live Viewer blur report
I previously reported the traditional Live Viewer blur issue in this forum post:
viewtopic.php?p=444234
This is my own earlier report and is included only as background for this feature request.
The purpose of this request is not to remove the 2027 real-time neural renderer. I would simply like the GPU display path and the neural rendering mode to be independently selectable.
Thank you.

I have fixed the blur issue. It will be part of the next build.
The request for turning off the realtime denoiser has been forwarded to the Octane team. This

Thanks, that sounds good.
If the traditional Live Viewer blur is fixed in the next build, then the separate GPU Texture Viewer / realtime denoiser control is much less important for my workflow.
The main reason I wanted to keep GPU Texture Viewer enabled was simply because the traditional Live Viewer looked blurry.
I’ll test the next build and see if the display sharpness is fully resolved.

[Lutzyy]

Incredible work! I've waited since high school back using Octane V2 for this! Being able to export this with the native Cinema 4D exporter as animations would be life changing for me as someone who does tons of animation.
Even if that doesn't work, an auto step to next frame and write as EXR would be enough for me within the live viewer; as technically that's what I do for now manually.
I've set up and auto hotkey script lol