Flickering objects (especially scatter objects) in GPU render.

[brandonwinslow]

Hi all,

I'm having an issue with a scene (a few scenes, really) where objects are flickering out of existence for a frame or two at a time repeatedly (see attached video). Most of the objects - like the forest - are Procedurals being placed by a Scatter object. My best guess is that the scene is pushing the limits of my RTX4080 in terms of its 16 GB memory? But a the same time, if everything *can* render at once on the GPU, and the scene doesn't crash the IPR, why can't it be consistent in rendering everything in the scene frame-to-frame?

The scene renders without flickering on CPU of course, but takes 3-4x as long.. 🙃

Any ideas would be greatly appreciated! 🙂

EDIT:

Using R26

C4DtoA 4.7.2.1

[peter_horvath]

Sorry for the late reply.

Only the camera is moving or are the scatter object or the shapes animated as well? I've only seen similar flickering when the scatter surface was animated and push apart was enabled. Since you said there's no flickering on the CPU, I assume that's not the case here. Sounds odd though that only GPU render is affected, don't recall any similar issues. Are there any warning messages in the log?

[peter_horvath]

I'm wondering if it's related to procedurals. Can you run a test render with the original shapes scattered, instead of procedurals?