Hi,
I need to integrate UE4 + Bullet Physics for Softbody.
I tried Flex (But flex is not a usable. And can be useful for visualization)
Tendr Dynamics plugin still in highly development.
I want to achive https://youtube.com/watch?v=vqGyIXsPT5E
Bullet supports tearing (plane cutting on softbody).
If somebody can make this waiting pm about price and time range 
Best Wishes,
Korcan