Thanks for the answer, this is good info. My english bad so if not hard try help with this...
What scale you use?
I want realistic domino physics so if domino scale (1 2 0.25) i get good shadows but slow falling, and (0.1 0.2 0.025) bad shadows and good fast falling.
I think solution to speedup rigidbody for scale (1 2 0.25) right?