problem in Dynamics (Equilibration)

I use Discovery studio 2.1 in Window XP sp3 with RAM 3.25GB. when I run 'Dynamics - equilibration' using .msv file after running Dynamics (heating or cooling) or custom Dynamics (heating or cooling), it takes long time , even more than 15 hours, but still not complete. It looks error in protocols. Can anyone help me to solve it?