Slow shadows and physics problem

[RobDollar]

The shadows and ragdolls seem to move at around 30fps and as a result looks quite choppy, is there a fix for this or is it how they are meant to be? Everything else is fine and smooth.

Amd quad 2.8, winxp 32, nvidia 9800GT.

 

[RobDollar]

Does anyone else have this problem or noticed it or have any information about it? I can't find anything about it anywhere.