When do you know that is better to stop read a book?
I was recently reading The Cathedral of the Sea by Ildefonso Falcones and after roughly 500 pages of the book I had to give up, because I was fed up with the story progression that in my opinion was all over the place even though I cannot say that it was a poorly written book. For me it was a though decision mainly for two reasons:
The first is that for a long time I have been the type of reader that thought that you have to push through regardless of how little you enjoy the reading, so I am not used to quit on the books.
The second reason is that, even now that I want to be more flexible on this aspect, I would like to have a sort of checkbox of things , that I realized I currently lack, that if I see a lot of these elements on a book I know that I can quit it without worrying about losing a possible gem that maybe starts to shine later on, because there have been situations like this in my previous experiences for example with Dante's Hell and the Decameron.
So, I was wondering if you all had some sort of criteria that make you say, whelp I can comfortibly drop this read, and if so what are them? There have been books for which it was truly a struggle to decide whether to stop reading or keep on gonig? Do you also feel this FOMO when you stop reading a book?