This is not a Windows problem, this is an application problem, specifically Quicken. The software is likely pre-rendering all the font previews so the dropdown

This is not a Windows problem, this is an application problem, specifically Quicken. The software is likely pre-rendering all the font previews so the dropdown that shows the fonts opens instantly. This is probably something that Quicken has done for decades and no one thought 'hey, no one changes fonts, this is pointless to do on startup'.