Problems creating a domino with the "rigid body"

Hi everyone,
I can not solve a problem with the “Blender version 2.78a.”
I want to animate a domino formed by tiles, I modeled and then multiplied with the “Array modifier”.
I created my domino track with a “Curve Path”, set on the tiles the modifier “Curve” to follow the trail.
Obviously I create a plan with the “Rigid Body” by setting “passive”

Now, I set the “Rigid Body” on the tiles and I start my animation on blender.
The tiles will begin to swing and after these fall to the ground, without having generated an action / movement.
(like there was wind on my scene)

I also noticed that when I compose my track with few tiles, do not fall.
If I compose a longer runway so with many more tiles will begin to swing to fall.

How can I solve this problem?

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