DR and Particles

Max 2017 and the latest Vray.

I have cached the particles in pflow using cache disk, all render nodes can get to the cache files. No errors in the log window. I’ve cleared the cache and updated it, BUT I still get render nodes rendering the wrong frame/bucket. They render, just not what looks like the correct frame. Any ideas? See image.

The first time i rendered this animation it did render perfect. Now it won’t at all. I tried deleting the cache files, rebooting everything with no luck at all.
Also note I’m using Solid Rocks which I don’t think would cause this.

Any help would be very much appreciated.

This could happen if you’re using the Render/Viewport option of the Cache disk operator, but your viewport and render particle count are not identical.

Which is sad sad default behaviour in PFlow since forever up until Max 2016, with which I’m currently working. Maybe AD fixed it now. But I don’t have hopes.