Originally Posted by astra
[assuming you don't use embedded fonts]I believe that you still have not realised of how to upload LRF files to your reader properly
You have to use eBook Library
software to upload LRF files to your reader. Then change of text size takes 1 second. Open any LRF book takes 1-2 seconds as well, if you use eBook Library software to upload the files.
I use Calibre, the eBook Library software is unusable if you want to manage large numbers of books in collections, as you have to assign each one manually. I've also had large LRF files (1000+ pages) that when added through eBook Library wouldn't open on the reader at all (Invalid Page error), but would open if added from Calibre and paginated on the reader.