Audacity 2.4.2 Export creates stammering files, hiccups

I recorded my audio (microphone) using Audacity, saved as AUP files.

The audio plays fine within Audacity. Absolutely no problem.

Then when I export to any format (MP3, WAV, OGG, AC4, …) the output file contains skipping and stammering sound.

I just can’t get it right. It is so strange because all the audio plays fine within Audacity itself. Now I fear I’ll have to re-record my entire work in another audio program.

Can anybody please help me? Thank you!


If you import the file back into a new (empty) Audacity project, does it play correctly or does it skip and stammer?