Originally Posted by murraypaul
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.
[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.