If possible, share an example of how you are laying out these tracks. Is each song on a different track, or are they contiguous?
It's best to minimize the # of tracks, especially if the files are large or 2K/4K, as program memory is limited.
To share the project please follow these four steps carefully, and someone will check it out...
Back up --- With your project on the timeline, click on MENU at the top-left. Click FILE|BACK UP PROJECT FILES TO FOLDER. Choose a folder and SELECT FOLDER.
Upload --- Locate the saved, numbered FOLDER, NOT the VPJ or export file. Upload it to a free server - Google Drive, MS OneDrive, etc.*
Get link --- Get a public link. If using Google Drive click GET SHAREABLE LINK. Change "restricted" to "anyone with the link can view" Click COPY LINK | DONE.
Share --- Paste that link here, or click the folder at the top-right of this forum to message it privately to me. It won't be shared.
* Before uploading, right-click the folder, click PROPERTIES. Look at the File Size to confirm that it's not too big for the free space on the server.