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I've used c4d as my main tool for 25 years now and have been using octane as my primary engine for the last 6 years. I can tell you that I've had more crashes because of octane in my first year of use than I'd had from c4d (including betas, alphas and other plugins) for the first 20 years. But we've stuck with it because the productivity gain, render speed gain and image quality gain over standard render was exceptional. There are certain actions and areas you learn to save before doing because you know they have a high chance of a crash (delete unused materials whilst the asset manager is open, pressing undo before the last undo has finished when live view is enabled), But Smolak is right, it can and absolutely will shit in your bowl of cornflakes whenever it feels like it. You can change the diffuse colour a thousand times, but the next colour change will crash it. You can kill it applying materials, navigating, animating. Heck Ive had octane crash whilst my computer sat idle and I went for a piss. The wrong drivers will crash octane The wrong windows update The wrong pcie slot the wrong pcie riser cable The wrong gpu clock speed (we had a 1080 that when the OC edition cards added that extra 50mhz, they would all die) Now for redshift, I honestly haven't put enough hours into it, but even if its way more stable than octane, that still leaves it as potentially causing loads of crashes.

Mainly GPU renderers are like to crash often. There is no situation where they exactly crash. I noticed that Octane and Redshift can crash mostly during material node manipulation. Sometimes Redshift can crash during simple camera rotation in large scene if he didn't finish refreshing OGL update materials. This is why I disable OGL materials preview in large scenes. Also it is much more responsive after that.

I'm not. Octane user.

I do wonder how many of these crashes people complain about are just the current realities of gpu based render engines all being less stable than their cpu counterparts due to endlessly changing gpu drivers. How much is c4d itself being unstable vs redshift being the new standard render engine. 99% of my crashes are octane. Even if redshift is a fraction of that, it could still be the main reason,