Hi,
I am doing some pyro simulations, but I the renders are awful. I have searched here and there to get quality and speed results but it doesn't work. I know I have to use micropolygon engine but…

Any help would be welcome.

use micropolygon renderer for volume and put the volume quality to a value range 0.8 - 1.0.

have you seen the tutorials in the archiv?
https://www.sidefx.com/index.php?option=com_content&task=blogcategory&id=203&Itemid=362 [sidefx.com]