Breast / boob / Jiggle physics out of control and fly everywhere

I’ve found the solution.
When spawning metahumans, they’re spawned onto a position of 0, 0 ,0.
In the sequencer, I’ve given them another position. So the metahuman is spawned onto “0”, and “thrown” to its new position in 1 frame.

The breasts and physics are still on 0 when the position is renewed, and “thrown” to its new position. You can see the same happening with the shoes if you slow down the render and watch it frame per frame.

Delaying the physics was the solution then, and I’ve added this to the “event beginplay” blueprint. Maybe there are more elegant solutions: