Particle Frequency Not Working As Expected

Particle frequency doesn't appear to have any visible influence on the particle system. You can test this by changing the particle frequency value on the particle system in the attached project.

1. Open attached project
2. Set the particle frequency (found in event generator module) to something very high

RESULT
No visible change in the Particle Frequency.

EXPECTED
The frequency of the events only firing the first time decreases as the value increases.

Particle Frequency node not working in Event Generator