Emitter spawning issue

In one of my levels I have several P_Fire emitters. They all share the same stats, but only about 1/4 of them actually work during gameplay. They all worked before in 4.4 and now this. I’m running out of ideas. Hopefully someone in this awesome community can help me out. Thanks everyone

Can you post some more detailed info about the problem? Can you post a picture of the particle system setup? This would help us figure out the problem.