Particle: Beam Noise issue

I was wondering if anyone new how to fix this (second attached picture).

I have a Beam particle that is a simple line, that hardly bounces up and down. It looks like a concentrated laser, sweet. BUT, the edge that instantiates the beam flickers too much so you can see a triangle of distortion. This distortion is just a little to visible and kinda ruins the effect, even from afar.

any ideas on what values I should tweak to get the instantiation point to calm down

The first picture is the end of the beam. notice that it is calmer than it’s start point.

Closing this as it is a duplicate post of this thread: