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Chaos in UE5 and ragdolls

Hi there. We are having issues with ragdolls and chaos having a estable constraint behaivour.
We reproduced this in many ways, and started from scratch the set up of all the bodies one by one.
Bodies start to over stretch when the mass starts to pull (as you can see in the video) start to be heavier and heavier. However, making the mass lower doesn’t fix the issues.
We are having a hard time to have only angular constraints without any linear stretching. We increased iteration numbers, changed mass, position and axis of constraints with no different results.
Is this expected? I don’t remember having these issues in Physx.
Thanks!