What is a highly awarded book (Pulitzer, Booker, Hugo etc.) you couldn’t get into or didn’t care for the ending?

I am slowly making my way through Pulitzer Prize novels and last year I read The Brief Wonderous Life of Oscar Wao by Junot Díaz. I was immediately drawn in by the unusual annotated historical account of the Dominican Republic as part of the story telling style. The protagonist was interesting but I found the other characters to be more so. However, the ending left me wanting. I couldn’t quite put my finger on what was missing or what I was expecting. I’m wondering that maybe I missed an important element to appreciate the ending or if it’s just a matter of taste.

Has anyone else had this experience with a highly regarded book?