I'm not Halasian (I don't think I am, anyway--but stranger things have happened), but my problem with SOIAF was the pacing. It was very difficult for me to stay engaged with the book--and I really did want to, I liked the characters, the universe, and the writing, although I wasn't into the crushing unhappiness as much--when the third-person perspective changed with every chapter. And it didn't just change often, it changed between a vast cast of characters and a vast array of plot-lines and every chapter ended with a cliff-hanger, but to you wouldn't come back to that character for another sixty pages, and by then, after being in the heads of three other characters and seeing
their cliffhangers, I could remember what exactly happened to Character A, so I would have to flip back. It made reading it a chore, because you had to process so much
stuff just to stay on top of what was going on. But because of the leaps from character to character, you would go long stretches without making progress in the individual plot lines.
It was very frustrating for me as a reader--I just don't process
books that way. When I read fantasy, unless my interest is academic and I'm being intentionally detached, I really want to be able to immerse myself and feel enveloped in a different world. Reading SOIAF felt too much like work.