I just got bored with Dune once it started focusing on the Fremen for some reason. I found everything before that fascinating though.
I DNF'd Shogun around 70 pages in because I couldn't handle the repetitive and redundant dialogue, the awkwardly contrived info dumps, and the innumerable mentions of the size of the protagonist's penis.
Parable of the Sower was amazing, but too real. I couldn't handle it for more than a few pages. And
The Name of the Wind stopped being interesting once the mystery of the "modern" part turned into "let me just tell you everything over the course of the series instead of drip feeding the tantalizing the information to you during the current day portion."
Highly rated book you DNF
Here is my embarrassing list....