HELP - FumeFX Field artifacts - HELP

[Eric-S]

Hi when I render my scene with fumeFX, the render gives me some artifacts (see image attachted).
My spacing boxe size is around 550x500x600. So I don’t think it’s the quality of the sim.
I was seeing the same problem when I render some dense smoke in close-up.
We are also rendering with scanline.

Any suggestion?
thanks for your support,

Eric