I'm seeing a bit of odd behavior that I'm having trouble understanding. I have two machines set up to render in Octane. One has two Nvidia RTX 2080 Ti cards, and the other has three of the same card.
Both machines are rendering different cameras in the same scene, so I wouldn't expect the render times to be exactly the same, but what's odd is that the denoising and saving is very different between them. The first machine with the two 2080s renders the frame in about 4 1/2 minutes, meaning that going from 0 to the sample limit takes that time. I presume that Octane is then running the Optix denoiser, saving the frame, and loading the geo for the next frame, and that part takes around 25 seconds.
What I'm seeing on the other machine, the one with three 2080s, is that render time is around 3 1/3 minutes, but denoising, saving and moving to the next frame is about 4 minutes.
The render settings, resolution, etc. are identical between the machines. It's not clear exactly what's going on, since there aren't any onscreen progress updates, but I'm surprised that my faster machine it taking somewhat longer per frame.
Any suggestions on how I might debug this?