Small particles are too much jumping and bouncing when collide with rotating maze

[Liborek]

Because I couldn’t exactly formule what is my problem and what I need I record this video:

Unity - Small items are too much bouncing

My maze is controlled by arrows on keyboard. I have two problems there. First is that the little particles are “jumping” when I moved with maze and It should move like sand (strew sand is the right expression I guess). Second problem is that when I moved with maze firstly particles are “inside” wall and then collision is detected and recalculated and particles are bounce of wall. How can I fix it?

This is screenshot from settings of maze (it’s made from 2d box colliders):

And this is screenshot of prefab of particle:

Thanks for any help

[tedthebug]

Have you tried increasing the mass of the sand?

[hippocoder]

You want to decrease the mass for it to fall quicker, or increase gravity. A more frequent fixed update rate will also help.