appreciate you taking the time!

So I have a simulation of smoke that I'm using for the engine of a spaceship, my problem is that I can't feasibly see how I can render it.

A single frame on 1080p/300 samples in cycles (on the more demanding frames with the most smoke) takes 1 hour 35 minutes. which works out at around 20 days render time for the whole thing.

I have a huge amount of points on sheepit renderfarm but I can't use them as the max upload file is 500mb and my smoke cache is 4.5gb.

Is there something that I'm doing wrong? Please let me know if you need additional information. And any broad guesses at common size issues are very welcome!

Cheers guys!

  • $\begingroup$ 4.5GB cache for the whole animation or single frame? Can you render single frame at a time? $\endgroup$ Nov 28, 2018 at 17:04
  • $\begingroup$ It's 4.5 for the whole animation, and in theory I could render a single at a time on the renderfarm, but I'd have to load the project file + the bake data for each frame, comes to about 60-70mb per frame. The upload time would then be the issue unfortunately. $\endgroup$ Nov 28, 2018 at 20:32

1 Answer 1


What are your numbers on the volume sampling step size? You could try reducing it, you won't lose any significant quality, check out this other thread, it might help

Smoke drastically increases render time

  • $\begingroup$ Cheers man, I'm having a look at that now, will check back in a minute! $\endgroup$ Nov 28, 2018 at 20:33

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