Spellmonger.
It starts off okay, then shoehorns some sex in and you’re like “huh, okay, glad that’s over”. Then sex magic gets introduced. At length. Then a short while later the main character has an incestuous threesome with a 16 year old.
At this point I complained to my brother who recommended it to me. He was like “oh yeah I guess the beginning is bad, but that’s all done now.” Apparently he forgot that exciting conclusion involves the main character saving everybody through the magical power of exhibitionism.
I stopped reading it 20 pages from the end. I just couldn’t stand it anymore.
Altered carbon book 3. They got a new reader who can’t pronounce the main characters name, Kovacs, correctly. They even make a point in book one about how some people don’t pronounce it correctly, so it REALLY stands out.