You are right @7Kelt7, with your settings I find it does look different in niagara editor than in world viewer. The problem comes from the vortex velocity. I disabled it and keep making changes, it acts the same in both viewers. I replaced ‘vortex velocity’ in particle update by ‘vortex force’, it acts as much as in my mind. I think you could use force in update more, the velocity is giving the particle increment amount of velocity each frame.
