fire particle speed

Hi I’m trying to create a flame in a fire place. I used the particle fire that was included in the starter content (P_Fire). The fire works but the rate the fire flickers is way too fast for what i need it for. Does anyone know how to slow down the rate the emitter emits the particles? I’m looking for something along the line of a contemporary fire place. Like the ones you have at home with the propane gas, the flames are slow and subtle. Mine right now looks like a roaring bonfire.