Curved Motion Blur With Force Built-In-Noise?

[mitchfx]

tyFlow doesn't yet support motion blur with more than 2 segments. During instance calculations it only grabs the start and end interval of the time step, not any more steps in between. This is why you're not seeing curved moblur. A workaround, if your particle count doesn't change and you don't have millions of particles, is to render as meshes instead of instances, so VRay will manually grab the required number of substeps itself by interpolating the mesh directly.

Tyson,

Thanks for the reply.  I've tried rendering as mesh but my particles are being born across several frames thus the count is changing. Embers and other such things with linear moblur is one of my visual pet peeves so hopefully there will be a future update to workaround this limitation.