I'm right in the sweet spot of this demo. I picked up Jordan's EOTW upon its first paperback release... when was that? '90? '91? TGH had just come out in hardback.
Like thousands of others, I suffered through the painfully slow plot advancement after the first 4 books, and then the ridiculously slow releases, until I finally gave up in about 2000. I haven't read anything past WInter's Heart (??) and I don't think I even finished that one.
Same with Martin - AFFC is sitting unread on my bookshelf.
So I moved onto action/adventure mindlessness - stuff like Cussler, and police/detective thrillers like (actual) James Patterson...
Even though those last two guys churned books out, a common thread with the fantasy guys emerged - none of these guys are any good at finishing an idea. They are ridiculously creative at forming them and laying down the groundwork. A couple of them are even good storytellers, but even in the stories that are finished, the ending is always such a tremendous letdown after all that buildup.
So my new benchmark on writing is - show me someone who can write an ending worth all the dramatic tension they buildup. I'm still waiting for it...
Edit - Mark Twain famously said something like "I didn't have time to write a short letter, so I wrote a long one instead." If any of these writers were as good as their initial reputations, they could condense everything into about 4-6 books, dealing just with the essential plot lines, and write a grand finale that would have you hotly debating it with friends for years to come.