Opening a font with over 60,000 characters took 03:10 (v 15.0.0.2999)
It takes 00:07 to open another font with more than 40,000 characters.
The time difference is a bit big, please check if it’s a font problem or a software problem?
https://send.cm/d/1FmjV
It is the combination of a lot of glyphs and a lot of OpenType layout features that makes is slow.