iBooks is slow when highlighting
Hi,
I like a lot to use ibooks to read books and I like to highlight them so that I have importanti things always available on my devices too.
The problem here is that ibooks has started to go slow and each word of phrase I will highlight takes about 13 seconds: the same happens to remove highlight or to write a note.
The problem happens on books that I have already highlighted on many pages, for exemple I am now on page 387 of about 1000 pages.
I have tried to start read a new book and there all goes fast: highligh is immediately visible, no lag at all.
Does anybody know why this happens and how to fix?
thanks a lot!