For years I created PowerPoint presentations on my MAC using Office 2004 and had very few compatibility problems when they were shown on PCs with Windows.

Now I have updated to Office 2011 and now when PPT presentations are shown in Windows most of the animation is choppy and shakey. (We've tried in on several PCs all with the same problems.)

For example, a series of bulleted text with the "wipe" animation will have the first line enter flawlessly and then each succeeding line enter progressively more choppy and shakey. (Photos and text boxes are afected as well.)

As the presentation continues the animation gets worse .... worse at the end than at the first.

Is there a know compatibility issue with MAC PPT 2011 with Windows? Do I need to go back to an older version of PPT to resolve this?

Any help would be appreciated.