Render is slowing down each clip

I'm running PE 2019. and have used it many time.  When I put together the clip and add music everything is fine.  However, when I render the video, it's putting the clips in slow motion AND chopping off the back part of each clip so it's still the same length.  How do I stop this?  What setting would cause the software to put a clip into slow motion and edit the length to fit the same length?