Slow, boring and pretentious

Rating: 3/10 (7 January 2019)

Very mild spoilers here, so it is OK to read if you haven't seen the movie, and want to be spared from that experience.
After the high rating and rave reviews here, this movie was a huge disappointment.
The pace is excruciatingly slow: for an hour pretty much nothing happens. We are mostly treated to empty stares, scenes that (I guess) were supposed to help character development, but really lead nowhere, and long, meaningless pauses during the few dialogues.
After an hour the pace picks up a bit, but without much more meaning to it.
The main characters are one-dimensional and lack development. Gosling's character seems to be a sadistic psychopath, who was also scratched by autism just enough to take away all of his social skills. He spends the first hour doing nothing but looking mopey or just plain stupid, then, out of nothing, he starts to show bursts of anger and violence. That scene in the diner with a guy from a previous heist - what was that supposed to be? I guess it was meant to be a sort of transition, to show us what a badass he really is, but it was really lame and done badly.
The plot is mostly nonexistent, and when it is there, it is completely ridiculous. Protagonist's actions and motivation make no sense. It seems that, apart form being a psychopath and autistic, he is also stupid, but, hey, at least he is good at brutally hurting people.
Some people praised the music, but I found it unnecessarily loud, and mostly annoying, and the lyrics were so in your face, that I can only view them as parody ("A real human being and a real hero." Really?)
The graphic violence also seemed out of place and put in only for shock value.
To sum it up, this movie had no plot, no character development, no sense, so it tried to be artsy, but only managed to be pretentious.