Audio cutting out in LMS

Has anyone had issues with audio being cut off within your projects? I'm using the built-in text-to-speech option to add narration. I've had no issues testing on the timeline, when previewing the course, and when sharing for review. The issue happens when I publish to our LMS (Cornerstone OnDemand). 

For troubleshooting, I've added additional silence to the end of my generated text-to-speech. Anyone else experience this issue? Any other suggestions? 

Edit to add: I'm using Captivate 12.5