Have you ever used Octane’s Adaptive Sampling? This tutorial is a big one. Not that’s it’s good or incredibly interesting but big in the fact that it could save you 30% render times potentially. I’ll go over Adaptive Sampling in C4D Octane, how it works, and why you might want to use it. Hope it helps you out!
For a more detailed tutorial check out Raphael’s video here: https://vimeo.com/280017322