Particles : duplicate/visible at emmision location

Hi everyone,

I’m having a problem with a particle simulation that represents the suction of a robot vacuum cleaner.

In the viewport, everything works fine, but when I render, there are duplicate particles that aren’t animated, as if I had a duplicate of my emitting object that isn’t affected by the simulation.

Here’s a preview of the viewport and the rendered image:

It’s like if the particles are back at their origin position.
I’ve cached the particles to disk and baked all dynamics.

If anyone knows what’s going on, it would be a huge help.

Thanks for your help!

can you able to send blend file, i will look if i can find out problem, hard to know wt causing this without all particle setting. if have any assets you dont want share just share blender file only with particle