Issue with closed captions

I am having an issue with adding closed captions to my project.  On some slides it will show but not on others.  Can anyone solve this.  I tried to upload the project here but the file is too large.

Captivate Review

I recently had the opportunity to utilize a competing e-learning authoring tool for evaluation purposes. Just letting everyone here know that Captivate is heads and shoulders above the tool I evaluated (out of fairness I will not say which one it was). Well done to everyone at Adobe to make such a great and easy to use product!

Voice Over Audio

I am having an issue recording narration for my project.  There is an audible hum present after recording. I am looking for recommendations for microphones or setup suggestions.

Audio Recording Issues

I am trying to add narration to my slides and I get an audible hum on playback. Looking for suggestions on settings to use and/or what headset/microphone combination works best. Thanks

Text to Speech Slide Audio

I’m trying to use the Text to Speech function in Captivate 2019 to add slide audio and I find it to be very robotic. Does anyone else have this issue or am I doing something wrong?