PhysX Bind Slicing working?

[betamax]

I just tried Bind Slicing using the tySlicer helper and it works fine with ParticlePhysics flow, but not with PhysX flow - using the same/similar setup?

Please see the video. It shows bound particles falling through a tySlicer.
https://streamable.com/mo9k1u

I've checked and added the correct tySlicer helper to each flow's break operator, but no luck. 
Maybe I'm missing something?

Thanks,
Max