Physic bones gets crazy

A Blueprint copied from ContentUnreal that runs the bone simulation and adds a impulse to where the crosshair is pointing.
The problem is that when you move some places, the physics starts to go crazy.
Regardless of settings in PhysicAsset, I’ve tried shrinking Bodies, removing collisions from those close to each other, removing collisions from all of them, setting Angular Limits to Free/Limited/Locked, Strength value in PhysicalAnimationProfil to 0, to 500, to 1000 always same result - when given bones touch, physics goes insane.
2023-05-02 10-34-49.mkv-00.00.14.508-00.00.23.332.mkv (8.7 MB)