Joint Driver with Scale 0.1 Rigidbody not working

Hi, everyone, I try to deploy the Crawler model to Apple VisionPro Mixed Reality scene, When I trained in unity, everything is fine. But I need to set the Crawler scale to 0.1 otherwise it is too big for Mixed Reality scene. And the joint driver is not work after scale change. Does anyone try this? Any help is appreciate. Thanks

To solve this need change unity physics engine config, unity physics engine default not good at deal tiny object, to deal with tiny object, I need to increase Physics config “Default solver Iterations”