Keep Particles when Reactivating Niagara

I am trying to switch from Cascade to Niagara. I am facing this issue:

In Cascade, I created a flame spell (similar to the one in Skyrim). I placed in on my character’s hand. Whenever I press the mouse button, the particle system (PS) is “Activated” and the particles spawn. When I release the mouse button, the PS is “Deactivated”, but the particles remain (desired). When I press the mouse button again, the PS is activated and the particles from the previous activation still remain (desired).

In Niagara, the particles from the previous activation do not remain when I activate the PS a second time. My Emitter inactive state is set to “Complete” but it doesn’t fix it. How do I keep the previous particles when I reactive the Niagara PS?

Bump Bump

Hi, I’m having the same issue. I have flamethrower particles created with Niagara. It spits fire when mouse button is clicked and stops when its released. However clicking again while particles from previous burst are still on burning removes them from screen, as if Activate() was resenting system.

Oddly enough issue comes up only when I select GPU rendering, which I would like to use due to performance boost.

Does any one know solution?

Bump, has any one had issue with particles suddenly disappearing and than appearing again after short while?

Ran into this issue to, only happens on the particles when they are set to GPU, works fine as CPU. Also seems to work fine if they are deactivated and activated by a montage, just not from a bp.

Can we please have any info on whats going on with this ??

Having the same issue. Do GPU emitters not allow reactivation without reset?