Shadow of War is on my backlog and every single time I play it (years between playthroughs) I get bored at the exact same point lol. Same with Arkham Knight. I actually get bored in my Factorio playthroughs at the same exact science point as well, usually right around when I start getting Uranium.
It’s really weird I think I have adult ADHD. I’m already bored of my Terraria playthrough and I didn’t even attempt the boss I wanted to kill.