Overlap on Multiple Text-to-Speech Narrations

I wonder if it had something to do with Webex that we were using for the meeting yesterday. I have notes on 20 of these slides that were problematic, and now when I go back to  version 7 that we used for the review, nothing is doing that. It was so bizarre. Here's the link. 

https://360.articulate.com/review/content/35046362-6ae6-4868-a12e-6d816d7ae79b/review

I didn't save anything with the jibberish and it wouldn't let me download the single sound file. I will save it and upload it to this thread if that repeats. It was using Brian's voice. 

I've continued to work on the file since the review yesterday afternoon, so you won't see the things with the overlap. The team asked me to change out Arnold's voice, which I replaced with Brian's so it's pretty much a different setup now. Thanks for the quick response, StevenBenassi​ 

Hi StevenBenassi​ 

Here's a slide with some of the goopy audio I was getting the day I posted this. You can hear that when it's reading dollar amounts; it gets goopy on the second and fourth layers on the first slide, and on the phone number on the second slice. I've rendered these multiple times trying to correct it and think I'm just going to need to type out the words. 

When I wrote my initial post things were much worse, and it was giving me things that sounded Russian and Chinese and it wasn't just the numbers. This is the first time I've seen it again.