So I just finished the second book in the Pathfinder series, by Orson Scott Card. This is a quite excellent pair of books (with it being very likely that there’ll be a third.)
You’re likely familiar with the Clarke’s Third Law:
Any sufficiently advanced technology is indistinguishable from magic.
Some minor spoilers, these books are science fiction, not fantasy, but they very much appear to be fantasy at first. The books involve time travel, and preventing the end of the world, and those are all minor enough spoilers I don’t think knowing it will adversely affect your reading of the stories.
All in all the stories feel fairly internally consistent (which can be important in any book involving time travel) and even though the book is thick as a brick I tore through it in what feels like just a few days, though a quick look at Good Reads tells me it was almost exactly week, since I finished Erebos on the 2nd, and started Ruins the day after.