One interesting thing i found out about corona lights.
When emit on both sides is swithed off it generates a insane amount of fireflys in the volume material.
But when it is on everything is ok and it renders insanly fast.
OFF
ON
Can you provide the scene? Or try with a daily build when we release it? There was a fix for this problem probably recently added
Can you share link where i can upload the scene, i cant find it.
Corona private uploader: Renderer for architectural visualization - Corona | Chaos
Thank you, i wil upload scene in a hour. With a VolMAT markup.
1442837014_berlinettahipoly.zip
confirmed as fixed