Why GPU Particle Motion Blur Does Not Render in Sequence?

Hi guys!

I am currently working on a project and I made a very simple particle effect (GPU Sprite) of stars. I’ve set a motion blur in the GPU Sprite Type module in Cascade to get that fly through universe effect of expanding stars. They are for a cinematic, so I made a sequence with a CineCamera Actor and I need to render out an image sequence. My problem is, that even though the motion blur works perfectly well in both the editor and the game mode (I have the sequence play at the beginning of play mode), when I render out an image sequence in exr format, the stars don’t blur anymore (they are there, but very still). I tried video sequence as well, same result.

Any ideas on how to fix this? Thank you!!