This isn't a pressing matter, but I was curious - is there any method where you can quickly render the volumetrics pass for compositing? When I render scenes on my personal workstation with only 32gb of RAM (I know this is low, outrageous prices are preventing me from upgrading my workstation and nodes at the moment) I can't get past the initial pass.
I haven't tested this, but maybe doing a global material override could save resources for this purpose. Though I think there would still be long render times, at which point I could just use a z-depth pass to simulate volumetric effects. Anyway I'm assuming there's no way to quickly produce this pass, I want to be wrong.
