Ridiculous save times - teensie file!

I am about to build a course in StoryLine. My file has 3 slides, a small amount of text and 1 graphic 273kb in size. No triggers besides the default ones. No variables. The SL file is 589kb. When I save this file as described, it takes a good minute (60 sec). What can account for this?

As I build this file, will I be facing 2-hour save times?

What can authors do to keep save times sane? I read another thread advising to save locally. I am saving locally.

Thank you in advance for helpful tips on this!

 

*Note: I removed the 1 element I was working with,  a box with a few sentences of text, and tried again. Was saving normally and frequently, then as soon as I applied some styles, the save time went from 1/2 second to going on 4 minutes. This must be a bug. No way a file this small can take 4 minutes plus to save. Help!