Community
I'm getting extremely weird motion blur artifacts with these particles. I'm trying to accomplish convincing sparks. But the motion blur will randomly band random particles with others.
Video here: https://streamable.com/l47zot
This looks like the motion keys of the particles aren't lining up (they are offset by one). Probably because in the bad frame a particle was just created or just destroyed. I'm not familiar with C4D, so can't tell you exactly why that's happening.
Is this X-Particles or other simulation? The plugin should follow particles by ids just fine in X-Particles, so it might be a bug. Could you please share the scene with us to check what's going on?