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Thank you for your reply, but my issue unsolved. It still behaves like as rubber,wave,shake. I don't want that.
I want to stiff, stabilized. I must keep density of red-Dot is 1 and blue-box is 50, because this is necessary for my game
If you Set stepping iterations (Velocity iteration: 10000, Position iteration: 5000). It will stiff and stabilized. This is exactly what I need, but poor performance, so I need a better way.
video compare between "Set stepping iterations" and no "Set stepping iterations"
https://youtu.be/fZetqciO_fk
Here capx I had "set stepping iterations" https://drive.google.com/uc?export=down ... HBBTzFIeUE