Many of the longer novels stress your reading skills ....
but once you have such skills you can get through them without too many problems. I too had problems with Moby Dick in the longish dissertations on the various types of whales. But that aside, it's a pretty good book. I've gotten through Don Quixote, The History of Tom Jones, Les Miserables, War and Peace, and The Brothers Karamazov. When you can't get through a book universally acclaimed as being a Classic, it is generally not the books fault,
but the fault of your reading skills.