Motion blur with alembic but can't get it with Mixamo FBX

[Yngvai]

I've got an alembic animation of Bumblebee transforming. I'm able to get motion blur just fine when I render in Octane Blender. This is with the shutter time at 10%.



However, I have a Mixamo animated FBX model doing the YMCA dance, with exact same objects and materials. I'm unable to get any motion blur, even when I crank the shutter time to 50% (I should be getting obvious blur at that shutter time).



I don't understand why I'm not getting any motion blur with the Mixamo animation. All of the objects in the model have "Motion blur" checked. All of the materials on those objects are the same as on the objects in the alembic animation. Is there something I'm missing?

[Yngvai]

OK I figured it out. I needed to check "Deformation" on the motion blur for all the objects since it's a Mixamo skin that is deforming a bit