In Simcenter 3D Motion, when there are one or more flexible bodies, the animation can take minutes to start after pressing the Play button.
By default, the animation uses the absolute max/min values. This can be changed in the Motion Preferences. To access Motion Preferences, go to Menu-->Preferences-->Motion
In the Motion Preferences dialog, uncheck the option to Use Absolute Min/Max Values for Flexible Body
Click OK in the Motion Preferences dialog and animate the solution.