Not loving the parkour after a few hours, it just doesn't feel smooth in the same way that it does in Mirrors Edge or Assassin's Creed. Everything you do seems to have a pause before you're back to moving. Still early on I presume though, so we shall see if that aspect improves.
From what I've seen and read that will improve greatly after you get some upgrades in the "Agility" specialization. I agree it is kind of cumbersome in the beginning, but I feel the upgrades in this game are handled pretty well. Just keep using it and it will level up.