Why does my particle system spawn more in Blueprint than in Cascade editor?

Hi,

I got an issues with an emitter- it seems it spawn way more particles once inside the Blueprint than in the level or in cascade.

See screen :

Any idea why?

Thanks.

It would help to see an image of the Blueprint.

If you have a particle system as a component it is possible you are activating it repeatedly? If you are referencing a particle system and activiating it you may be accidentally spawning more than one particle system at a time?