Thanks for the ideas. Everything in my scene is fixed and the only thing animated are the spinning wheels. I know the pivot is correct as it renders correctly in modo and the wheels are shrinking here in Octane around the correct centers. Maybe I can try a simpler locator grouping in modo before ...

Hi,
I have set up an animated spinning wheel in modo an exported the scene into Octane. When I render it there the wheels shrink in diameter. The more I set the motion blur, the more they shrink. Any suggestions for a work around?
Thanks!

Octane_spinning_wheel_problem.png

scoro
Win 10 pro 64 ...