Motion Blur / Feedback / Antialiasing effect on Niagara Particles

Hi everyone,

I’m developing a project that revolves around a Niagara particle system.

By activating anti-aliasing, the unreal viewport shows a weird effect when the particle moves, even when I pause the sequence. For artistic purposes, I want to replicate this, but the actual exported renders do not show the same visual output. Any idea on how I could recreate a similar effect? With particle material perhaps?

Thanks for any kind of suggestion, I have no clue on where to start.