I played through one single player save and two multiplayer ones with different groups, enjoyed it all - but only got a little ways into Act 3 on any one save. A combination of middling performance with my older rig and just having sank so much time in I burnt out a little.
Still think it's a fantastic game, but I don't know if I'll ever go back to finish it - I feel like I'd have to start a whole new save.
I'm in the same boat. I want to like the game and it is fun, but I got stuck with some area with orbs and my save corrupted...one of the orbs just disappeared after 50+ hours and I can't bring myself to play again and possibly have the same bug pop up. Maybe someday but it's just such a big game.
It was the same with divinity original sin 2. The final act was so large, disorganized, and not fun. Like they had a lot of ideas they needed to use but didn't know where until then, so they threw them all in a big city and called it a day.
In my experience act 3 was extremely buggy, we had a blast in act 1 and 2 with my friend but the bugs in act 3 killed basically all our motivation and we never finished it.