Can I slow down a Particle System? - e.g. Slow Motion Effect

Hi all,

my game has different time states:

• Paused

• Slow Motion

• Normal Speed

• Fast

It's pretty easy to Pause and Play a Particle System.

But cannot find any way to easily change the speed of the particles.

I imagine I would have to change:

• Duration

• Lifetime

• Emission Rate

• Velocity over lifetime

• Force over Lifetime

• Limit Velocity over Lifetime

• ...

Seems a bit out of hand.

Any ideas? Thanks! :)