I can have either emission or principled BSDF. When I drag the position of the color ramp in cycles rendered mode, it seems to be trying to do something, but unless I overlap the markers nothing changes... This is the same wether I use the provided material or if I create one myself.
Hi memorydestroyer;
It looks like the result of the Divide is always 0, or at least really close to it. This means that the Lifetime of your Particles is too long.