Time Step / Sleep threshold correlation

[tyFlow]

Hey Andreas, so in the next build I've adjusted the sleep settings to that they are timestep independent...however, one thing I realized while testing this is that part of the reason your particles are sleeping sooner could simply be because with more timesteps, collisions are more accurate, thus resulting in less jittering and/or more constrained exit velocities (and particles with less velocity are more likely to fall asleep). So that may also have contributed to the behavior you are experiencing.