Symptoms
Consider the following scenario:
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You insert a shape in a Microsoft PowerPoint 2010 presentation.
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You add a motion path to the shape.
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You try to set the Smooth Start and Smooth End animation effects.
hen you set the Smooth Start animation effect this scenario, the Smooth End animation effect changes to a value that is closer to 0 seconds. Or, when you set the Smooth End animation effect, the Smooth Start animation effect changes to a value that is closer to 0 seconds.
Cause
This behavior is by design. When you set the duration of Smooth Start and Smooth End animation effects, the sum of those values may exceed the run-time of the animation. When this happens, PowerPoint automatically reduces the length of these effects so that they both fit within the allocated time frame.
Workaround
To work around this behavior, increase the duration run-time of the animation. To do this, change the Duration value in the Timing group on the Animation tab to a larger value. Then, set the Smooth Start and Smooth End animation effects to the values that you want.
