4.1 smooth rainbow effect?

Hi,

With the comming of the new 4.1 software colour mixing i am experiencing deficulties with colour effects. Especially with a "simple" rainbow effect. I know it has all to with the transition from 1 emiter's virtual range to the next, and between the type of fixtures which all respond differently due to other emiters and their respective range.

Any advice on how to handle this?