This was a topic that I originally posted about in the Octane Render Facebook group, but I've been forgetting to bring it up here. In short, I'm very confident in saying that using the image texture compression causes octane to be very unstable and makes it vulnerable to loads of crashes. It's been over a month and since I've eliminated the image texture compressions from our workflow, we haven't experience any Octane.dll crashes on our machines (a total of 3) which used to be multiple times a day. I'll post the Facebook post below for context. I'm not sure if this has been addressed in recent Octane updates, but this has been my experience on Octane 2020.1.5-R4:
From the Facebook group:
For the last 3 weeks, I’ve been able to run Octane on 3 separate machines with 0 crashes. This is absolutely crazy considering having to deal with crashes multiple times a day on Octane was the norm. I’m on Octane 2020.1.5-R4 on C4D R21.207 (but I suspect this can apply to any version of Octane and C4D). The two fixes I found that radically improved stability was:
1. Disabling Denoiser on certain cards. My 1200W PSU was not sufficient enough to have AI Denoiser enabled on 3x RTX 2080 Ti. Having this config would cause my computer to blue screen and shut down, specially when I would render to Picture Viewer/use Render Queue. The solution was to check Octane settings and disable AI Denoiser on 2/3 RTX 2080 Ti cards before I would send to render. On a machine with 1200W PSU and a 1080 Ti and 2080 Ti, BSOD was never an issue.
2. Disable all image compression for image textures by leaving it at default setting of “Automatic”. This was a recent solve I learned from David Baril (Thank you!). It felt like the elusive issue that’s plagued all my projects and causes a seemingly stable project to all of a sudden crash repeatedly. I always used this option to save VRAM, and it’s really good, but it turned out to result in Octane being very very very unstable. The moment I reset all image textures back to automatic, my projects immediately became stable and has remained so these last few weeks.
It would be nice to see this get resolved because the VRAM saved from the image texture compression is really nice haha