Ok I have excluded any possibility that it wouldnt be Calibre that made the files so slow... Converted from txt, rtf and html, Calibre mobis are slow (even if sent via email with conversion), if I convert them through Amazon, they are lightning fast...
The only question that remains is then, how can I remove Calibre from my Mac so that everything will be restored to initial settings in Calibre without me losing my library... How much work is it to reload the whole library? Can I just drop them in and everything will by in place or will I have to retag everything and download covers etc (I am planning to just import the epubs and not the Calibre metadata)... How can I reset my Kindle so that all Calibre data on there will be gone? And finally, why does it take over an hour until Calibre has initially set up metadata files on my Kindle (on first connection after deleting the present metadata file)? Is it advisable to begin with a totally empty Kindle and redownload my Amazon books afterwards? Could a jailbreak have ANY impact on this behavior?
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