07-11-2019, 04:03 AM
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.