THE PROBLEM is that if you turn on "CHILD PARTICLES" and SET them TO "INTERPOLATED" MODE it causes JITTERING of them
acros surface of the geo from which roots.
When selecting "Simple" mode everything works fine - No jitter at all, perfectly sticked to the geo.
You can test it simply by switching from mode to mode to see this problem. Its already setuped for rendering using eevee but same problem using
Note that I ve briefly tried to change export settings for Alembic during export of anim but nothing helped...still causes this problem.
Also note that when outputting alembic cache for animated object using transforms not armatures, it works ok. But when exporting alembic from armature animated
object this causes this problem.
please see this Zip archive with readme info and example scene....