I use octane render since many months a I like it !
I used to generate .obj and assemble them in octane with placement.
But it is not very usefull and complicated to animate properly.
So I start working with Cinema 4D wich is perfect for what I need.
I used the plugin, and all work fine.
But now, I try to animate renders, so I export ocs file trough the plugin window,
and export alembic to generate cameras movement.
I allready have little trouble to adjust camera and objects size, but that's not my probleme yet.
I have trouble with some stripes appearing when I render, dispite my materials are very simple. I think about a light not properly setup.
Here is a picture to understand what I'm talking about:

On the right, you see horizontal stripe (sam on chairs)
On the left, on the small section of the wall, you can see the same stripes doing a semicircle.
Can you explain what I'm doing wrong?
Thanks in advance,
Jerome