I am maintaining a ~8000 book library over the network as well, and I am seeing a similar slowdown when opening Calibre with my Kindle is attached, or when I send a book to the device. I assume this is due to the updating of the 'on device' column, and it makes Calibre almost unusable since it takes about 5 minutes to update each book, even though the status has only changed for one book.
Is there a way to optimize this, or perhaps disable the 'on device' feature?
|