I get conflicting vibes when I read your post. You start by saying that ADE
is running slow when trying to view your ebook: do you mean that you're
trying to read the ebook via ADE on your computer? Then, you mention 'a
different reader' - which implies to me that you're talking about using an
ebook reader, which implies you've downloaded/transferred the ebook to an
ereader. Cna you clarify the situation a bit more? It would help in trying
to help you.
My main concern is the cpu spike and I wonder if the ebook sections that have graphical content influence the cpu and memory used.
I just started having the same issue. I use digital editions on my home computer, generally for reading graphic novels, and two or three days ago, it became nearly impossible to scroll pages. Just having the digital editions reader open spikes my CPU system usage up to 100%, and makes reading impossible.