I'll put it very simply. I just got through watching episode 3 with a nice migraine. 
Still, it was well made, but I felt some of it was cheap and I HATE the "if the leader dies, then they all do/disperse/give up", etc. It is annoying. I expected the NK to last until the end. Now, it's just Cersei. Meh.
Well, hope you feel better.
I agree though, there was so much "plot armor" to go around, it's absurd. No matter how stupid some characters are, nothing happens to them. The whole show honestly just feels like a contrivance against consequence. There is only consequence if you are "bad."
It's like someone asks if you like pizza and if you'd like some, and you say "yeah, of course!" So, you start smelling it, and it smells so damn good, and then they cart out some Little Caesars. When you rightly question your urge to inflict harm on them over this charade they say "what's your problem, I thought you said you liked pizza!"