Originally Posted by llasram
Capitalization is relevant[*]. The Reader-internal path is "Data", with just the initial 'D' capitalized. Then created just 'FONT' in the Reader-internal memory and put your font-file there.
[*] But only up through the 'Data' part. It's complicated.
Thanks. That (plus realising I hadn't properly understood what the CSS needed to do) has fixed the problem.
This is pretty impressive, it seems like it might be slightly slower paging forward several pages in a go than LRF or and ePub without a font specified, but it is hard create a fair comparison because there is now a different amount of text on the page.
I hadn't realised how much faster ePub was to open and change text size than LRF either, not having to recalculate the number of pages makes a huge difference, from 10 seconds to open to 1, from 22 seconds to change font size to around 6.