Hi Juanjo,
there is a problem when using a texture in the anisotropy rotation. It's sometimes rotating at twice the speed of the object, it's assigned to. Attached is a GIF, which shows the problem, you need to open it in another tab.
In another scene I used the same objects and material and it's working as expected. I guess internally Octane needs not use some kind of inverse transformation to correctly calculate this but in some cases it does this in the wrong direction and therefore the texture spins at twice the speed instead of being static.
I reduced my scene quite a bit, it's about 60MB. How can I transfer it to you?
Cheers, Lukas