Ridigbody - joints are moving apart

Unity Engine
1

Hey, I have a trouble with connected links at any type (fixed, configurable etc’). I apply force down on a falling cube, this connects to 2 arms and then another cube. The problem is that all objects are springy, they are connected but still moves and rotates a bit from each other while I’m saying “don’t move”. It’s now configured on ‘configurable link’ and all angular and position are locked. The linked objects should go down with the main cube, but not get distant from it. Can you think of a solution for this?

Thanks

2

It could be colliders fighting. I solved that problem by defining all the parts involved to be in a special layer “subsystem”. That layer was defined in the physics configuration to not interact with itself. After doing that, motion was smooth with no parts jumping wildly about.