"Play sound" in procedure happens without the other parts of the procedure

Hi, I'm starting this topic because I haven't seen anyone talk about my problem.

I have a procedure that basically is random "if random < 0.15" and it does things like particles, effects and sounds. My problem is that, when most of the time all things happens as they should, Sometimes only the sounds happens and the things like the particles don't. Is there any reason for that and if yes, what's the solution ? 

Here's the link to the procedure image:

https://imgur.com/a/wvu8r3q

thank you.