adjust motion blur length of the motion vector color set

Hallo,

I am rendering an alembic cache with motion blur using the Motion Vector Color Set, and it works fine.
But I would like to adjust the strength of the motion blur.
I could create a VRayMesh and play with the Velocity interval end. But this would force a new export.
(like hinted in the docs:
Chaos Docs
)

And I do not want to adjust the shutter in the camera, since the rest looks fine.

Is there a more interactive way?

THX in advance
Christian

EDIT:
I am going with the VRayMesh workflow, giving me also faster playback in the viewport with face skipping …
No need for alembic in my bifrost workflow.

Unfortunately, I don’t think we have a way to do this for the moment for regular geometric object.