Why my VFX graph changes velocity (X axis) depending on a player orienatation?

I'm working on kind of frame-thrower weapon and while the VFX graph itself is pretty straightforward, it has some unpleasant glitch, increasing particles spread over X-Axis when I rotate my player's hand (change orientation)

This is what I want to achieve (single beam, low spread), and it works like that in certain player's orientations:


And that's what I get (single beam spread over X-Axis) when I turn to another specific orientation:


The VFX graph. Set velocity random is there but it's very low, and the issue is still there even if that node has zero velocities across X and Y axes:



The video on how it looks in dynamic: