Help Please. Vray only rendering three lights at a time.

[vamplips]

Like the subject says, Vray seems only able to render a couple lights at the same time. I can have ten lights in the scene, delete any 7, and the remaining 3 will light up fine. But when all the lights are there together, it only renders a few random ones. Anyone know what causes this?

[jiminy-billy-bob]

I think it's a limitation of the demo version.