I also prefer to clean up the css in the book before loading it on my Kobos and remove any redundant stuff, like nonstandard body font size, margins and line height for body text and so on. So I very seldom access the reading settings on the device itself. Currently I have over 2000 books on both my Kobos and I haven't noticed any slowing down.
I do remember my Libra 2 freezing several times when I experimented with different fonts after buying it. But once I selected my favorite settings and no longer constantly messed with fonts and margins, I have experienced very few freezes, perhaps a handful in 2,5 years.
|