hi, i have a problem (a new problem :wink: ) with rendering volume shaders, in this case(billowy smoke).
my scene has multiple of objects than connected to isoOffset node and volume shader assigned.
but after render, i have flicker on clouds.
i attached my render mov file to see and help me to solve this problem.
thanks.

On your light that has deep shadows enabled, there is a setting for pixel samples, up that to a 2x2 as a minimum, maybe even 3x3. That should stop the flickering, and also cancel out the dark artifacts in the cloud surface.

If the flickering stops and the dark artifacts are still there, up the shadow map resoultion.

thanks a lot ragupasta.
i do that.