Is this a Bug in Niagara?

Development Asset Creation FX
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1

Video: https://streamable.com/ghhs2r

As you can see in a video I’m encountering a very weird problem, if I use big numbers (thousands) in velocities and forces in a particle update the niagara system will look different in the level than what it does in it’s menu but when I start hovering quickly over any icon in ue4 ui then it seems to be quickly refreshing and look almost as intended and then it looks bad again when I stop doing it. Is this a bug or am I doing something wrong?

2

How does it look if you press “simulate”?
I think the editor window have a high refresh rate if other windows have focus? Or something.

3

It looks the same while simulating or even in a standalone game.

4

Same bug!!