Particle System Prevent Particles from Dying

Hello, my name is Víctor and I present the following problem.

I have a Fairy Glowing Effect with particles. I got the desired effect at the beggining of "Play" but somehow particles are dying by time, maybe they last with full visibility 5 seconds and then starts fading out.

I have fading effect with Color by lifetime but even if I disable it particles go dissapearing.

What I want is to keep the intensity of particles constant all the time. How can I do ? I tried refreshing remaininglifetime by code and also vi particleSystem.Play() ever x seconds in coroutine.


0.5 printed is remaininglifetime that I'm reseting all the time.
Second picture is intensity at the beggining.
First picture is itensity at when few seconds pass.

EDIT: I have two particle system attached on different GameObjects.
One emits the spheric bright, the other one emit small particles as points.
The one want to keep constant all the time is the spheric bright.

 

It tell me this error:
Precision issue while prewarming particle system - 'Duration' or 'Start Lifetime' is likely a too large value.
UnityEngine.GUIUtilityrocessEvent(Int32, IntPtr

If I disable prewarm option, particles are not seen.
Also, rest of things are like this



If I unable Size over Lifetime, particles don't dissapear but size of particles doesn't look good.
EDIT: Okey, I noticed that particles are not dying, the problem is that they are getting smaller and invisible. Invisible thing is solved but if I unable size over lifetime I don't achieve the effect I want.

 

Try randomizing initial size instead of size over lifetime.
As well as start color instead of color over lifetime.

And disable prewarming.
On long lifetime it causes very significant performance drops.

Instead use Emission -> Bursts to spawn required amount of particles. Also disable rate over time.

 

He's trying to keep a particle around while having a 'fade in' effect when they spawn.
I'm having the exact problem, my app has tasks which are represented as particles. I need them to stay around (or at least a long time, say 1000 seconds) while having fading them in, or at least altering it's size the first second.

However the curve graph becomes increasingly difficult to use the longer the lifetime.

 

The only solution I found is using texture/sprite sheets for a 'fade in' or any effect you're looking to make on top of keeping a long lifetime

If you want a fade in/fade out effect while having an inf time for your particles.
Make two sheets, one that does a fade in, then one that does a fade out.

When you need a particle to do an effect you can easily make that happen by just changing the texture sheet when you want in a script.

 

I have a similar problem where I want smoke particles to pool against a ceiling or tunnel top. The smoke is coming in 5 second "puffs". If I make the lifetime Infinity or even 50 seconds, I don't get another "puff" until the 50 seconds has expired. I want puff, (pooling smoke), puff ( further smoke pooling), puff ... I can adjust the life time so the smoke from a puff goes away after some reasonable time, but I want several "puffs" of smoke to accumulate before this happens.