It feels like either the movie was horribly cut, or whoever wrote dialogues and script was plain wasted. Or both. The pauses between phrases are too long, the dialogues end abruptly, the scenes pacing is way off, there's little reason to what's happening, there's no connection between characters - they just utter phrases for (seemingly) the sake of it.
The main character made look not only lacking wrist strength and mobility due to surgery, but lacking any sort of mobility and agility like he's ninety-plus already. The secondary main younger character is plain insufferable. And it's nothing about the actors, it's how the movie is made - I've no recollection of seeing the actor who plays the younger character, but I've plenty of recollections of seeing Lucy Liu and Christoph Waltz, and as great as they are, their characters look just as abysmal here. So it's definitely not an acting issue.
It's just... wasteful. Decent premise, even if not anything new. Great cast. Good potential. All wasted. Sad.