if I do a quick viewport render to test the animation. I have updated my GPU driver to the latest studio one. I have checked the file paths and they are all fine, no missing textures. I even tried globalizing file paths but that doesn't work. It shows fine in the Octane LV, but not in the C4D viewport or viewport render.
They are all basic glossy textures with a diffuse, spec and normal map. Nothing special on these materials.
Project asset inspector, all green ticks.

Viewport render shows black. Some do manage to render but some randomly show as black.

Viewport render settings:

Is this a C4D(R23) bug or an Octane problem? I am on 2020.2.1 but I had this problem on the previous few versions too.