Thanks for the answer. Finally we found the problem. But how to deal with it?

>>mass scaling should be ~7.8e-10

How did you determine such a number?

With such a large number, the task will be solved for a very long time. This is not rational for such a small detail. And all because of the fact that I decided to go to the calculation for 1 second.

Let me remind you that I moved to 1 second so that the body does not deform during movement, otherwise, when calculating for 0.0001 seconds, the movement is too fast for it and it starts to distort a lot. How to solve this problem?