Cursed Vector Motion Blur Artifacts

I’m having the hardest time getting vector motion blur to behave. Is this an artifact anyone has noticed before?


It’s a complicated armature with nested children, not sure this matters?

Comp

The vector pass looks insane.

No Effect:

  • Light Bounces
  • Different material
  • Different comp
  • Film > Transparency

Must be something with the object but I have no clue.

Sometimes BA is just great for rubber ducking. :front_facing_baby_chick:

Narrowed it down to this boolean. Both Float and Manifold solvers produce artifacts in the vector pass. They also call me the bug catcher. :cockroach:

In this project I animated a geonode switch to turn on and off the cutter’s geometry, which is easier than animating the cutter’s position. Weirdly I’m on 5.1.1 and the geonodes still show old sockets from when I created the file in 4.x.


While cutting

Float

Exact

Manifold

While not cutting

Float

Exact

Manifold

The only combination that never gives issues is exact. R.i.p. render times? :crossed_fingers: