A series, but The Wheel of Time becomes insufferable around book five. There's like five chapters of lore/world building for every sentence that moves the plot forward. Also, the worst protagonist in the history of book writing. The side characters are the only reason I made it to book five.
I made it about this far as well. The thing that frustrated me the most was that early in the series they had to get from one place to another quickly, and they used that extra dimensional underground path or whatever, and they were like "oooooo, this is super dangerous, someone could definitely die!" and then later in the series it was just like, "yeah, we gotta take this route, nbd." So the stakes just felt really low and overall things got repetitive.
Lol yeah that was a big issue with the books. He made this massive, detailed, multicultural world with all of this dimension, but then he wanted the same few characters to go everywhere and do everything in it. So getting them from place to place was super tedious. He started off trying to make them just walk, then take a boat, then the Ways, then alternate dimensions, then the dream world, then he straight up gave up and said "fuck it, they can teleport".
Don't forget Skimming, which is plot relevant like twice after teleporting is introduced (and one of those times isn't even for traveling, it's to throw an invincible murder golem into the void between dimensions).
I do like that the portal to alternate dimensions ended up being how the Seanchan acquired the weird monsters their army used. That was some quality world-building.