Someone else suggested N.K. Jemisin’s Broken Earth series, which is also an unusual take on the post-apocalyptic and survivalism stuff that a lot of people are into these days.
I wouldn't say it gets easier but if you're like me and love fantasy settings but hate magic as a cure-all, it gets more engaging and interesting as you start to realize that maybe the castle itself is a central character and the fantasy comes from the fantastical massiveness of it all, when so few people live in it.
Also, the third book is where it really takes off in my opinion, and also where the sci-fi elements come in.
Mark Lawrence has several trilogies that fit into this genre. They're fantasy books but the setting/universe is based on science fiction.
Series that I've read and recommend:
Broken Empire
Holy Sister
Red Queens War
I found them all an enjoyable mix of dark/grim fantasy with a good mix of humor. These series all tend to follow an anti-hero or in Broken Empire's case you could argue it's a villain protagonist given just how unsavory a character Jorg is. Even still I found myself liking and rooting for that bastard.
I feel like Book of the New Sun by Gene Wolfe is in this category. It's definitely based in the far far future, but the narrator is extremely unreliable (and to avoid spoilers, there's multiple layers of complexity there), there's a healthy dose of religious symbolism and mysticism, the author also employs old english words for far future concepts, and the society of that far future has traces of feudalism about, that it really seems like an eclectic mix of fantasy and science fiction.