Storyline Lag

I have been working on a Storyline project for a while and suddenly yesterday it began lagging when I try to edit text boxes. I have a handful of slides with text-to-speech audio and I am trying to time "call-out" text with the audio.

I have saved the file to my hard drive and followed all the steps to uninstall and then reinstall Storyline. I also created a new file and imported the slides into the newer version. I have restarted my computer multiple times.

Is anyone else experiencing anything like this? It is very frustrating.

Thanks.