Wind Through Grass - dForce settings

Mediahead

I can't seem to arrive at the right setting for a slight breeze through grass. I'm using Modular Field Environment, modifying Grass 7. The settings I have arrived at so far are:

Gravity 1.79
Air Resistance 0.87
Frames Per Second Multiplier: 1
Collision - Good: Discrete: Swept Vertex

custom animation timeline, 50 frames duration

Wind Parameters

Diameter 8.11
Diameter Falloff  2.98
Falloff Length 2.0
Falloff Start 1.00
Strength (mph) 0.99

After the simulation, the grass still moves too fast.  Also, once I run the simulation, the program crashes when I try to save the scene file.  Any suggestions?