What version of Videopad? Clear Unused Cache Files, under OPTIONS|DISK tab. Install the latest video driver from the card or chip manufacturer's WEB site.
If you share the project someone will check it out. Here's how...
1. With the project on the timeline, click the FILE menu. Then SAVE PORTABLE PROJECT AS. Save to any convenient folder.
2. Open the folder that contains the saved files and ZIP them all.
3. Upload the zip file to DropBox, Google Drive, MS OneDrive or the like. It's free.
4. Make the uploaded file public (share it) and copy the shared link.
5. Paste the link into this forum.