I've never read The Witcher or played the games so everything was new to me. What a mess. A typical Netflix mumblefest. You can barely understand half of what's being said an the rest was pretty bad. I gave up on the series pretty quickly. I know there are people that say if you can get to episode 4 it gets better but it's a dreadful slog and I can't manage it.
One thing that brings me straight out of these stories is every time they say F*** or shit or the like. It completely invalidates the verisimilitude for me. While I have no problem with swearing in fiction this sort of thing feels too modern and that the production is trying to wave at the audience saying 'Hey, look. We're hip and cool and oh so edgy.' Guess what, you ain't.