Particle effect looks and behaves differently in separate projects

Hi!

Looking for suggestions on what could be causing a problem I have regarding particle effects in my project.

In the picture below you see a particle effect I've made in two different projects. The right one is what it should look like and does in a standard project and the left one is what it looks like in the project I'm trying to import it too . It looks and behaves differently even though it is exactly the same in both projects (as you might notice it behaves differently in a completely new scene as well!).

What I'm looking for is suggestions as to what could be causing this? I'm sorry for not providing any more information but I have absolutely no idea why this is and the project is pretty large so I would rather provide you with the information you think you might need then try to attach everything right away!