I am trying to make a snow simulation with vellum grain and using volumerasterizepoints SOP to give the points the snow look.

However when the points fall down and roll around they start to require a lot smaller voxel sizes which becomes impossible after a while. The beginning voxel size is fine but when the points scatter around they become just big blurry voxels.

So my question is how should I rasterize points of a vellum sim that cover a large area?

See the example hip in the attachments.