Goodness! We're all so great! Now, getting published. I agree, and this is a fundamental necessity. *waiting for Neuro to drop a bomb here* Check out your white space vs your black space on each page. Typical modern commercial fiction *see Neuro, I covered it* doesn't have page after page of narrative. #See below
Amazingly, you can dole world building out in tiny increments all the way through the book and end up with a more satisfactory commercial read. Instead, find an incident that shows your world, rather than telling your world. If your character teleports; don't tell us that, just show us. <--that is a simplistic example. A more complex example for a world that has an complicated justice system (Jim in that opening where the young wizard is killed) is to create a scene where this is shown working.
Complicated world building is important for the author; for the reader, it is far less necessary in most cases. If the author KNOWS the rules, then s/he will write the action within those rules, revealing it organically. Betas will find the holes where they say, "I didn't get this." Then you can fix it.
I think I made a friend sad when he explained his story in long narrative of how the world worked. My response (typically blunt unfortunately) was, "But what happens? Who is the reader going to care about? Who will s/he cheer for? Who will s/he want dead?" A story happens. Even in video games, the most wonderful, detailed worlds would be boring for 90% of players without unique characters and the exciting, intriguing story that plays out in that world.
#Let's discuss George RR Martin, who uses lots of narrative. Review his work carefully. I've heard crits against a slow beginning and in some ways I agree. Notice though how quickly we are involved emotionally in these characters within the narrative being presented. You can have a lot of narrative, just make sure you've invested your reader in your characters and what is happening. Martin always has something: some conflict, some threat, some important reveal in ALL of the narrative. He trains the fast-paced, modern reader to seek out what is beneath the narrative, thus involving the reader, which is our number one mission. Martin does this brilliantly.