Pendulum goes crazy when attaching a big mass

Godot Version

4.2.1

Question

I’m trying to make a winch. When the mass attached to the winch is small, ~1kg, it works perfectly as a pendulum. But when I increase the mass, let’s say ~5000kg, everything breaks apart, as this video is showing.

This is the simplest scene I can make to reproduce the problem. Just modify the mass of AnchorCargo node to see it: Scene

How can I make it work?