I began reading this series in 2019 and I'm starting book 5 out of 10 today.
For anyone unfamiliar, this series has a notorious reading difficulty. Imagine the storytelling/worldbuilding style of
Dune - then multiply that by several orders of magnitude. It is the most dense, complex, epic story I've ever even heard about. Each book could probably be a series in and of itself. I shit you not, according to Reddit then entire series has 453 different character points of view. Let that sink in.
I've taken my time not only because it's been struggle, but because I really needed to absorb wtf I've just read. It's the only series I've watched recaps on YouTube after finishing a book and used a dictionary to look up words as I'm reading. I really don't think I can recommend the series to anyone; I can just share my experience.
I will say this. After closing book 4........I know for a fact this is the greatest fantasy story I'll ever read. It deserves to stand right next to Tolkien in terms of impact on the genre, but it will
never become popular. It may not end up being my personal favorite series, but I'll hold it in a separate place to everything else.
Malazan doesn't rely on established fantasy tropes to anchor your understanding of what's happening. When you start this series, there is no security blanket of familiarity with the genre that will help you. Furthermore, the story is simply told to you, not explained. You are truly discovering a world that is foreign. It has seriously taken me 4 books to feel confident in my overall understanding of what I'm being told.
If you do feel crazy enough to give this series a shot, take your time. If you hit a wall and set a book aside to take a break, I don't recommend restarting it either when you come back. Just pick up right where you left off, even if it's been a year or more - it will not make a difference.
TLDR: This series is impenetrable for the average reader. It's taken me 4 years to read 4 of the 10 books. It's probably the greatest fantasy epic ever told.