"segasai" <nomail@nomail> wrote:

> I am using povray 3.7.0.10.unofficial (from ubuntu).
>
> are there any suggestions to deal with this ?

1. Upgrade to 3.8
2. Try using boxes, blobs, or another simple primitive and see if the same sort
of thing happens.
3. If you put all of the spheres into a union and apply a single
pigment/texture, does the same thing happen?
4. What do the post-render statistic say about ray-object intersection tests?
5. What resolution is your render?  Where is your camera?  Is it static, or
dependent on the extent of where your spheres are?  Are there any sphere
quantity dependent things in your scene?
6. Post your scene code and people can investigate, look over the code, perform
tests, and put many heads together.

That's the best I can suggest off the top of my head without knowing more.

- BE

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