Particle Flow Box#3 Cache Disk & VRay MBlur > 10 minutes "Updating Objects/Instances"

V-Ray V-Ray for 3ds Max Issues
1

I am facing a problem where i cached all my particles (20K boxes, nothing any renderer shoudl sweat about) with Particle Flow Toolbox#3 and want to render them with motion blur in VRay. I have set my Subdivs to 12 and Geometry Samples in the camera globals set to 8.

Without motionblur the scene renders in 2-3 seconds, with motion blur enabled it hangs for over 10 minutes “Updating Objects” in the first and only event (system is mega simple).

I already set the render node in PFlow from single mesh to multiple meshes with 100 meshes, 200 particles each (100x200=20000).

I have never experienced such a long waiting time for the “Updating Objects” process ESPECIALLY when the particles are cached upfront and 20K at the last frame/highest count only. At the test frame vray counts only 2765 particles!!!

Some advice here would be great! Thanks in advance!
Ansi

2

Is it possible to get me the scene to vlado@chaosgroup.com so that I can check it out? Especially with cached particles, there shouldn’t be such a great slowdown. (btw, when rendering with motion blur, V-Ray does not use the PFlow mesh, so the settings there have no effect).

Best regards,
Vlado