The Hyperion series in general was hard for me to read and it took me a few tries to get through the first duology, but it ended up being ok. I tried to read the second duology, but Endymion is just so boring I still haven't tried again.
I have the same problem with Snow Crash, It's supposed to be this seminal sci-fi work but it's just so boring. The first few pages go on about tires and how sticky they are and how much grip this car has as a result.
It's funny, I didn't mind snow crash, but I still haven't finished it. Seems pretty interesting, and I like a lot of Stephenson's work, but yeah, the writing isn't very engaging.