Speeding up simless smoke from texture?

[japetus]

I'm trying to do some simless clouds using the method of moving the smoke curve up slightly above 0 and the fog indeed renders fast like a dream, especially with denoising. But when I use a texture to modulate the noise, it renders super super slow. Any tips for speeding it up? Since I"m iinside the voxel grid flying through it, i get some pretty large voxels when light cache speedup is turned on, so i turned that off, with obviously more render slow downs. I'm on Max 2021 and Phoenix 4.3

[Svetlin.Nikolov]

Hey, if you turn off the Volume Light Cache, try regaining some of that speed by enabling Probabilistic Volumetrics from the Phoenix Atmosphere. You have to iterate on the samples though - too low samples will render slow, and too many samples will render slow as well, so there is a perfect number for each different scene somewhere in the middle.

Cheers!