"Mike Williams" <mik### [at] nospamplease> wrote:

> I did a scene a while ago with hundreds of small cylindrical holes in a
> flat slab (rather than a torus) and experimented with cutting the slab
> into smaller pieces with just a few holes in each piece. It turned out
> that the rendering was fastest when each piece was so small that it
> contained only one hole.

This should go in the docs, ot the VFAQ at least...

 -- Nikodemus

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