For me it was DS2 feels really Janky a lot of the time and parts of it feel very unfinished(There's substational evidence it was extremely rushed and unfinished due to a very troubled dev cycle), especially in the World/level design. The DLC fixes a lot of these problems but the base game the areas go from great to awful almost at random.I recently played a bit of Scholar of the First Sin for the first time and really didn't like it. I finished the original Dark Souls 2 4 or 5 times, but picking it up this time just felt bad. Everything felt slow and sluggish just felt off. I kept plugging away at it and then like 12 hours in I remembered that Adaptability was a thing. By that point though I really didn't feel like continuing to play even though I knew what the problem was and how to fix it.
DS2 really shit the bed in a few regards. The life gem system is terrible, and the adaptability stat makes the beginning a huge chore until you dump like 20 levels into it.
And then there's the cut and paste boss design which also doesn't help. Oh, there's the Dragon rider....a giant dude in Armor. Get to the castle, meet the queen, and then....oh....there's the dragon rider again, but now there's two of them because coming up with something interesting was apparently too hard or something.
And of course, What if SIF were a big poison rat-dog? Yeah, I'm looking at you, Royal Rat Authority.
I don't hate DS2 and I admire it tried to be different then Dark Souls, but sadly the execution ended up being a bit lacking. Whereas Dark Souls 3 ended up being very rooted in the first game but fairly well polished and the parts that got reworked(Darth Pope getting demoted from Final Boss to just a boss) don't feel nearly as egregious as DS2.