Testing out sand FX, we found it pretty slow to sim, but result are what we expected. Some strange "explosions" happen because of bad collision setup. Would love to fix that, but sim took over 160hs for 185 frames.
GrainPOP: 12Millon particles / 160 hs to sim / 2GB each bgeo file frame.
After cache an Upres was applied, giving a total of: 121.5 Millon particles for render.
Hope you all like it!