Share the project and someone will check it out. Here's how... http://nch.invisionzone.com/topic/23659-tips-for-getting-help-on-this-forum/
Preview playback is slow and shows 'Buffering' message
If you are seeing the 'Buffering... Please wait.' message while previewing video in VideoPad, it means that your video can not be rendered for preview in real-time.
The performance of the video preview player depends on many factors, including:
The specifications of your computer
Running other resource demanding applications at the same time
The complexity of your VideoPad project
The preview settings of VideoPad
How to increase the performance of the preview
Upgrade your computer. More RAM and a faster CPU will always help. Also consider a solid state drive (SSD) to speed up reading of media and cache.
Close other applications while using VideoPad. Examples of resource demanding applications include video players and 3D games.
Reduce the resolution or frame rate of the video preview in VideoPad. To do this, go to the Options dialog and change the Preview Format settings.
Note: The performance and quality seen in the preview does not represent what will be seen after the video is finally exported from VideoPad. The final export will generally look much better.