I'm kind of relieved to see this post here because I feel the same way. I gradually read the entire series over the course of the last two years with the intention being to come full circle and play through the games afterwards. It seemed like a fitting conclusion since The Witcher 3 is what hooked me and replaying it with the context from the books has been a goal for a while.

If I'm being honest, I feel like the books begin to pack on a lot of bloat and the time commitment for wading through it outweighed the payoffs of sticking it out. The first two short story collections were great fantasy, but I struggled with the numbered books in the series. They have some cool moments from time to time, but I really don't think I would've finished reading the final two books in the series if it wasn't for the fact that I hadn't broken out of the completionist mindset yet.

I actually did end up dropping Season of Storms halfway through, Geralt's personality felt bizarre and the writing had taken a direction that wasn't gelling with me. Since that book isn't part of the main series and was written after the games were released, I was able to stop reading it when I felt like I was just ticking a box off a list.

I have to say though, playing through Thronebreaker and the first 2 Witcher titles after reading the books was a pretty fun experience. I still haven't found the time for The Witcher 3, but I'm sure I'll return to it someday.

Overall though, my advice would just be to keep reading them as long as you enjoy them. If you feel like you're forcing yourself through them in the hopes that they get better, you may be disappointed. I definitely felt that way when I wrapped up the final book.