Is there a maximum number of fonts that LibreOffice Writer can handle?

I’m adding fonts to Windows 10 and through Windows 10 to LibreOffice. However, LibreOffice Writer, when I’m testing and displaying fonts on real documents, continually hangs up, whites out and tells me it’s not responding. Continually. Every several seconds. Rebooting doesn’t help. I’ve long ago turned off indexing on my hard drives. I’m wondering now whether there just are limits on the number of fonts that LibreOffice can handle or whether there’s another aspect of using fonts that’s the problem.