you could try turning down the value of the maximum ray depth. the only thing it really affects much is reflections and such. Glass objects might become less bright due to less reflections with lower ray depth settings, but that can in some cases be compensated with some diffusion and ambiant settings.

Also you might be able to do some about that orbs texture with the quality settings of volumetrics.

(_/)
(='.'=)
(")(")This is Bunny. Copy and paste bunny into your signature to help him gain world domination.