I lost all interest early on in season 1 but watched through the train wreck out of morbid curiosity. I have no interest in watching further.
As a fan of the books, flaws and all, the show writers have ignored or flat out contradicted key plot elements and missed fundamental world building beats.
Lan having a big fit crying and screaming at a funeral is such a stark contrast to his novel character that it cannot be reconciled.
This is like making Aragorn a misogynist, or having him bully the hobbits for being so short. Just a complete backflip.