Physic Asset Constrains Problems

Hi ! I’m trying to make a good enough Physic Asset for my character to have a Ragdoll / Physical Animation character but the hand is like “shrinking” or teleporting to another place when simulated.

The Constrain between the hand and the Forearm is setup.

But when Simulated Without or with Gravity the Hand directly “attach” itself to the forearm …


I’m not sure what I should look at, is it the Skeleton or the bone Structure not made Correctly or is there a property I missed ???

I’m a bit loss on the Physics / animations part of the engine … I would be gratefull to learn and progress on it .

Thanks !