How do I adjust motion blur to a charter path and custom path object in image renders?

[anonymous_user_756deb70]

As you can see, I have two people that are animated. One was placed as a Character path, and the other was placed as the object for a custom path.

Here are my settings:

Character Path settings:

Custom Path settings:

The Character Path person renders fine, with motion blur, but the blur effect wasn't enough so I added the other as an object moving much faster to try and create more blur.

The last image is what I get every time I try to render.