It is a really hard watch if you are over 30 like me. I invested too much time and I don't like ditching unfinished series but I'm really on the edge.
First two seasons were solid (nothing spectacular though, predictable events, chit-chat, teen love stories and triangles, overall 6/10).
I just finished s3e5 (The Flayed) and it was easily the worst of the bunch- More 'comedy' than drama now, but unfortunately not funny in the slightest. Hopper acting like a clown (trying too hard), the stereotype 'comedy' characters, evil Russians and the Terminator style foreign hard man who's unstoppable, lots of people shouting in each other's faces, villains with no peripheral vision, the indestructible and superhuman heroes, the cheesy one liners, dreadful dialogue...
Don't think I can take any more of this, unless season 4 is really worth it, because episodes are getting longer and longer.
I did not expect Twin Peaks level od mystery, but it's been really disappointing so far and it's getting worse with each episode.