sasquatch flickering shadows

[tvtom]

I have experienced this problem with several scenes at work and on a personal project at home. When I render an animated scene that has sasquatch, I get shadow flickers (light and dark) on the fur/grass areas that seem to coincide with the movement of my characters.

We have been talking back and forth to the Worley guys at work for months now with no solutions. Has anyone else experienced this? Any fixes?

What we've tried so far:
-turned up the shadow map sizes
-turned off fit cone angle and resized the shadow cone angle
-increase sas's shadow map and softness

[Lamont]

Pictures?

[tvtom]

It may be hard to see in these stills but it is extremely noticable when animated because it happens over 1 frame ramdomly.

[tvtom]

Here's the other

[tvtom]

Err, here is the second picture