Lisong Pro Font - 13MB .ttf file?

So I’m using the font Lisong Pro on a site but for some reason the .ttf file is 13mb and I can’t find a smaller file anywhere to download. This makes the first page load extremely slow because the font is used in the menu which just appears blank for a few seconds. Does anyone know how to get the file size down or have a smaller .ttf file for the font? I usually find .ttf files to be no larger than 100kb…