I don't like to have more than one streaming service at a time, and I have watched everything I was interested in Disney+ and I cancelled my account which expires in three days. I am weighing whether I want to go to Hulu or Netflix.
A friend of mine watched the Witcher (and has played the games) and says that the show is most likely better if you don't know the books or games.
I have played The Wtcher 1 and 2 and read a couple books. I really enjoyed the show. That being said, I never expect the mini-series or movies to match the original content. I always go into them viewing the origin content as the inspiration. If I am being honest, I have no interested in just seeing the same story told threw a new medium anyways. I want it to feel the same, but diverge. The motifs, aesthetics, and world feel right.
If you haven't played the games the show might be even better for you since you won't be annoyed by some of the character's appearance. Moreover the series starts in the same moment as the books (games take place after the books) hence you won't miss anything. Only issue is that if you didn't read the books the plot might be slightly hard to follow as the creators of the series decided to launch 3 different timelines at the same time, used exactly the same actors with no characterization change and literally no post processing difference like HBO did with GoT. I swear I had to refresh the plot from the books/wikis a few times during watching the series, because something didn't fit. Ultimate tip about Netflix. Its easy to cancel so you can just buy a month, cancel immediately, watch the Witcher and forget about the service.
My wife who hasn't read the books or played the games had no trouble following the multiple timeline threads.Maybe it is just because my wife and I both read voraciously.
I've never played the games or read the books, though I've watched some videos of Witcher 3. The series is pretty damn good but only when Geralt and Jaskier are on screen, otherwise it's often mediocre to poor at best. I ended up skipping a fair amount of the other plotlines out of boredom.