That's really freaking awesome!
>the protagonist is named Hiro Protagonist
Super lame.
That's why it tears me up. I really want to like it.
Suspending disbelief is not the problem. The problem is when the author writes something so unbelievable that there's never a chance to suspend. It's all disbelief, all the time.
Again maybe I'm ruined by years of reading bad sci-fi and fantasy, maybe I would have been better off if I read it 20 years ago. But Snowcrash and The Way of Kings both start their story with all of the hallmarks of every awful book I've ever read.
I'm sure the durian fruit tastes great, but unfortunately I've smelled a dumpster before and now durian is ruined to me forever.
Is that a requirement for that book? Stephenson's Anathem starts off with a word-dump full of vocabulary that you as the reader will not know, but everything slowly becomes clearer.
On the other hand, I gave up on Stephenson's Baroque Cycle for much the same reason you mention.
I had a hard time with Game of Thrones for the first few seasons too, because of the absolutely massive cast of characters. It became easier when most of them died off. It's one of the reasons I don't read a whole lot of fantasy novels, every author considers themselves a Tolkien and has to show off how much work they put into world-building.
I would have expected suspension of disbelief to have been broken somewhat earlier, if that's an issue.