It took around ten hours for me to really get into it. I remember buying it and trying it for an hour and leaving it in my office drawer for close to 4 months.
However when I came back I decided to start a new game with the little experience I had playing and it completely turned the whole experience I had. The writing is wonderful, the quest are tangible, the cast is truly deep enough where even off shoot quest leave a impact. It truly is an amazing game.
However not for everyone. A very hard learning curve and depending on the level you play a Dark Souls style of abuse. If you're not into two hundred plus hour RPG's then step away from this. If you're into just hardcore fantasy then saddle up because she's a beauty.
Also as a game lover you cannot but be beyond impressed by the attention to detail and love this title received.