Destructible Mesh Chunks Act Like Popcorn

Hey everybody! I know youre probably tired of destructible questions but Im hoping someone could help with this. Im breaking slabs of asphalt and need to pick up the chunks in a backhoe but whenever a chunk gets in the bucket (which is rare) they pop around until the bucket is empty. Now the bucket has custom collision on it so nothing falls out through the mesh but nothing sits still. Im using CCD for the bucket and the DM mesh and I have a physics material which is supposed to eliminate bounciness and boost friction.
Any help highly appreciated!

Video Example - https://drive.google.com/open?id=1IS6GDHDWt9Xb_-qyoSrl4QsP1TJvv5X5

bumpbumpbump

another bump

I’ve decided that Unreal just doesnt have the stability to support chunk computation at a complex level, if anyone can prove me different please do.