Viewport Renderings Stuck at 1/128 Samples

Hey i currently creat a little roundflight but when i tried to render it in viewport to shade the VDB my rendering is like “looping” at 1/128 samples and doesn’t go further. Anyone had this before?

I am Using CPU Cycles and Blender 2.91

The problem doesn’t appear to happen in 2.90

It’s probably https://developer.blender.org/T83300 which has been fixed in later builds. No word yet on if there will be another 2.91.x release to address some bugs.

I found that too but with Viewport Denoising on Openimagedenoise and 1 Sample start he doesn’t even go to 1 sample he is now currently endlessly switching between “Updating Mesh” “Updating Scene BVH”

interessting enough is that when switching to “branched path tracing” it works

I found the problem. I reported it

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