Read the books, played witcher 3, even play gwent.

Pros this series is absolutely beautiful, great action scenes, henry cavill steals the show. Acting for the most part in my opinion is very well done. Setting and wardrobe is spot on apart from the nilfgaardian armor in s1.

Cons: as an avid fan of the books, they just strayed way to much to the point you can feel that they have their own agenda. Not overtly, but its there. I understand you cant fit in everything, but they drastically changed so many solid plot lines for no real purpose other than their own. So many relationships that never existed.. so many important characters in the series that dont exist in an already solid book series.

Overall they took an amazing story and changed it to fit the big narrative of 2021. Big surprise. Just had so much potential.