We watched all episodes on lazy day yesterday and overall a 7.5 / 10.
Really feels like a long prologue of sorts to introduce the characters. Was hesitant about Yennefer, but feel the actress did a really good job and nailed her story for most the part, her story line was very impressive and the best of the three imo. Henry Caville pretty much stepped out the games for me so no issues there. Really did enjoy monster hunt / battles. Ciri was meh, but at the same time she was pretty much on rail for her role in this first season.
The time jumping back and forth however was not handled well at all. Having read the books and the knowing the lore somewhat, I could place events, but even then things were somewhat perplexing. I thought possibly the writers of the show had diverged significantly from the books, but realised no, they were just jumping back and forth in time. This is the biggest problem, know its going to stumble a lot of people up who have little prior knowledge.
So yeah, overall solid, hopefully now that a decent foundation has been some laid, we will see some movement in the right direction and time jumps if there are any more in season 2, handled more elegantly.