After building lighting cascade particle not showing in game

Hi, I just built the light because I wanted to remove the sentence from the viewport and now I notice that the cascade particles that I attached to some pickups On overlap and worked great before do not appear in the game. And in the Blueprint they are still attached to the items.
Can anyone help ?

Hey there @anonymous_user_ca4293e77870! There’s a ton of reason the particles could be disappearing. It could have something to do with their LOD’s. Do you have a collision module for spawning? Does the particle still work in internal simulation just not in the scene? Was the only change the lighting rebuilding?

Is there any way I can see it in action?

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Thank you for your answer.
Yes it only happened after I built the light before it worked great.
And yes, the particle still work in internal simulation just not in the scene.
I have attached a picture of one of the particles, maybe something changed after the build.
Thanks .

The particle:

The pickup item which activated the effect when MainCharacter Overlap:

So it looks like it’s not LODs since you’ve only got LOD0 there. I don’t see any issues with your particle system itself. Are the bounds fine as well?

Are the Idle particles you have there showing fine?

Yes, the idle particles is visible in game and works fine.
What is strange is that there are other particles that still appear during gameplay after i built the lighting.
There are some specific ones that just don’t appear only during gameplay.
I tried playing with the collision settings of the item mesh they are related to and it doesn’t help either.

That happens in every scene? it could be the illumination exponent that is too high, you can try making the particle emissive really high or turning down the mail light source a little bit to see if the Scene lightning is the problem

Hope this helps!

I was just about to ask the same thing as Angel, if it was all scenes and if we could see the lighting in action? Could there have been something that changed in the activation of the particles themselves?

I’m sorry for the delay. I tried everything and it just doesn’t show up.
I’ve already tried everything you said and I know it’s not a problem with the Particle itself because the Particle works with other actor.
The activation itself is from с++ and nothing has changed there.

Hrm, are these particles CPU and the others GPU? There’s a really tiny cap on CPU particles normally and that has plagued people before.