Lutz-Peter Hooge wrote:

> > - have few (or none !) objects with ior
> The windows glass...

This could be the main culprit. I have found that a few (and even small)
objects with ior used with radiosity could make a computer weep. I don't
know about a whole pane...

Lots of reflective objects don't help either, but to a lesser extent. The
other problem with using reflective objects with radiosity is the apparition
of ugly black spots. The spot remover is a higher max_trace_level (not the
MTL of 15), which in turns causer slower rendering.

> All the white objects have colors of 1.5-2. Does that slow down
> rendering?

Not that I know.
Personally, I prefer harsh lights with "normal" colors than the other way
round. More a habit than something rational though and I use higher than 1
colors when needed.

G.

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