> The attached image show a snippet of my scene with changes in the "count"
> setting of the radiosity configuration.
>
> I need to up the "count" for other reasons in the scene. If you look closely at
> these images you can see some artifacts just to the right of the glowing ring.
> The ring is actually sitting on a smooth cylinder, so the red "bumps" are the
> artifacts.
>
> Is there another radiosity setting (apart from count) that might solve this
> problem and smooth away my "bumps"?
>

You may try lowering minimum_reuse. The default is 0.015. Try something 
around 0.010.

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