Slow to load

[Ofnuts]

Normally this happens only once, when Gimp builds a cache of the fonts. Once this is done the cache is not re-built each time Gimp loads (unless something erases it in between), so subsequent loads should be significantly faster. The index is the directory "C:\Users\{your_id}\AppData\Local\fontconfig\cache" that contains three files. Do you see it created when you start Gimp? Is it still there when you start Gimp again?