Particle system pooling

I have simple pooling system for my particle system which normally deactivates the played out particles and puts them in queue and activates them again. but in deep profile I found that this actions cause spikes due to activation and parenting, so i decided to keep them active in the scene and just reposition and replay them when needed and this leaves me with bunch of useless active objects in scene which i guess the particles cost performance even if they are not looping. which way is better?

 

You are creating your own particle system (from scratch), right???

you don't have to parent the particles, just use array of the particles type to collect the particles in.
I believe this will improve the performance, if you want further help post your code.