J.C wrote:1. Make sure Use priority is set to Off. This may reserve some GPU resources to other apps so Octane won't utilize GPU at 100%
2. In Blender settings optix and cuda options are for Cycles not Octane. Octane has its own GPU settings in Octane Server settings.
3. Make sure you disable Octane denoiser in Octane Imager. It slow downs rendering considerably.
btw. what version are you using. I've checked on 28.11 and the rendering times were almost the same.
Thank you for the suggestions, I really appreciate it and it's good to know that those are Blender only settings, I was not aware of that.
I am also on 28.11, I have denoiser and post effects disabled. I tried using priority off but sadly it didn't change anything in this case.
It did made me think to check out the GPU utilization and now I'm even more confused. In C4D it peaks at 15% (I even tried with rendering for longer than 8s and it was the same), and in Blender it does utilize ±90%.
https://imgur.com/a/meoRrSe