Light trail motion blur - glitches

[viscorbel]

I'm trying to render an animated vraylight with motion blur to create light trails.
Unfortunately it seems to render with some very weird glitches, looks like some buckets are just dropped.

Image and file attached.
light_glitch.zip

[vlado]

You'll need to increase the min. AA subivs or motion blur subdivs.

Best regards,
Vlado

[viscorbel]

Thanks Vlado, that did the trick!

Still, in some scenes this would be very unfortunate. I had to bump up min AA subdivs to 10 until the glitches disappeared. That could slow down things considerably if I had any other objects in the scene.

[vlado]

Still, in some scenes this would be very unfortunate. I had to bump up min AA subdivs to 10 until the glitches disappeared. That could slow down things considerably if I had any other objects in the scene.

There's not much that can be done about that except to render the lights separately.

Best regards,
Vlado