I've been trying to play with a rigid body simulations.
I prepared a project of a building made of domino tails. I've placed all objects very tight, but as soon as I start animation it looks like there was some tiny gap between objects, so they all fall down a little bit. For a high building it leads to a construction disaster as the whole building colapses.
Here is an example: https://www.youtube.com/watch?v=4seYWa1g53s (I'd suggest to use 0.25x speed).
How can I fix it?