Since I now own a dual GPU setup I windered where I can see what is in use? I had somewhat strange effects. When I fired up an existing 3.1 Blender/Octane installation, startup went strangely slow and I got errors when trying to render, there were no GPUs mentioned in the system tab of the settings etc.
Deinstalled all and installed 3.2, which I wanted to do anyway. Setup everything from scratch, not using my saved config for blender. Now it works and I see the CUDA devices in the setup, each card single or en entry for 2x. Although I wonder if this matetrs at all or if the CUDA device selection in the blender options is only used by Cycles and ignored by the blender plugin?
In the render tab, I can select how many GPUs to use it seems ... there's the 8 spots to click, but I can click anything .. all 8 if I want. What do I have to do to be sure it uses both my 780ti's? Check the first two?