Double frame particle position issue with Phoenix FD

I'm using tyFlow to render particles from Phoenix FD. Every test render looks great, but when I try to render a sequence, the particle position is the same on the first two frames renderes, causing an offset for the rest of the animation. Motion blur seems correct though.

Here's a GIF that I hope show the issue:

The camera is moving, so the particles appear to move sideways in this GIF, but the first and second frame positions are identical.

This is using Phoenix FD 3 on Max 2020. Latest tyflow (016084), rendered with Redshift.
I'm not sure why that's happening. If you upload the cache and file somewhere I can look into it (send to if you don't want to post it publicly)

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