Attribute on Particles

[fabian_pape]

Hi, I'm trying to render a particle simulation where the speed attribute is driving the self-illumination of the particles. When I turn on the IPR the wrong particles are illuminated after skipping a frame it appears correctly.
Also when I try to render the sequence the attribute position is wrong. What am I missing?

[bdancer]

I'll need a hip file to investigate/fix this, could you please send it to me?

[fabian_pape]

I sent you the hip files together with the caches.
Thank you.