I've got an animation of a car peeling out on the ground that I'm compositing into a live action plate. It's a simple setup...car model and ground plane with shadow catcher. If I render it without motion blur, everything is fine.
However, if I render it with motion blur, the car wheel appears detached from the ground and is floating above the shadow.
How do I fix this? I know it's the Octane motion blur causing the problem because parts of the animation where there's no motion blur, then the shadow is fine. It's only the sections where motion blur appears.
I'm using Octane with Blender.