So long as its used like a projectile it is much better. When you aet it up to simulate like you would a cannon ball for instance, then it reverts back to the same physics.
Im sure that the math you have running now is more accurate than what Epic did with Chaos 
It must be made by the type of people that claim 1/0 is 0, or that 2x2 is 24… there is just no other explanation for the results you get with it…
Either way, do consider just building from source with PhysX.
It’s slightly better, particularly performance wise if you need thousends of mesh parts simulating…