Captivate 2017 best publish size when no spaces in path

I've been tracking down an issue I've seen with the HTML5 publish in Captivate 2017. Through testing, I've discovered that the published folder is smallest/most optimized when the publish path does not include spaces in any of the folder names.

From what I can tell, the image files in the "dr" folder are better compressed and organized into fewer json files when published to a path with no spaces. For some of my movies, the overall size of the final published folder is cut in half. I have not changed any publish settings or other settings.

I do not know if this is true for Captivate 2019 or later.