I find this with most books written in the same world tb, not necessarily the epicness you describe but the "facets" of the world. After awhile it just gets too much of the same thing, even with different authors at the helm they are all (or should be) pushing for a similar tone. Descent of Angels is very different but it's still in the same sort of world (I didn't really enjoy it, it seemed a bit rudderless tbh, not badly written, I know a lot of people hate the book but it didn't really have much drive to it).
It's very easy to get caught reading only BL books, take a break, read some non WFB fantasy rather than sci-fi. That's what I try to do, alternate between the two, keeps me from getting bored. That's my advice anyway.