Power Reading Mode, in spite of the negative connotations, can be a good thing.
It's something that's especially useful to employ on one's first time through Proust. You have to get through that whole bast book, using whatever method it takes, before you can begin truly appreciating it. Subsequent readings are then effortless and richly rewarding.
Speaking of which, oh dear, I seem to still have a couple of volumes to get through...