2 problem in destructible mesh

I’m having a bit difficulties to fracture destructible mesh with projectile. When I set projectile as follows:

1.In the Content Browser, go to Blueprints > MyProjectile
2.Click [ROOT] CollisionComponent and turn on Simulate Physics
3.Click Sphere and change Collision Preset to Block All

And the destructible mesh imported from PhysX Labs:

Simulate Physics [x]
Collision Presets [BlockAll]

It works in a way that destructible mesh collides with projectile and flies around but does not fracture. When setting destructible mesh Default Impact Damage to 0 it fractures a bit so when projectile hits it the pieces will fly around but it does not look good when it’s fractured bit already before hit from projectile.

Extra Info:

In PhysX I have two depths like in tutorial and at the playground everything works fine. The problem starts after I’ve imported it. I use third-person BP template. The APEX Destruction with UDK tutorial for ue3 basically just describes how to set effects and sounds. Maybe those next tutorials covers this better. I haven’t got there yet. But for now there’s a kind of problem even with simple destructible mesh + projectile in ue4 as described.