So Danaerys and co marched their entire army down to Kings Landing, in full armour, just so they could stand around outside while they had a 10 minute meeting, and then ordered the army to all march all the way back up to the north? I reckon I'd be slightly fecked off if I was an army guy.
My main issue with the last two seasons is that the writing just doesn't fit the characters anymore. Where it does it's just become cliché rather than clever. The Hound is a good example. It's like he's become a parody of himself. It's still amusing when he's on screen but there's no depth to the character anymore. He's just there to be a miserable git and tell people to feck off so it can be funny.
The show spent years building up this idea, for example, that Tyrion was the smartest one of the Lannisters. That was his thing and how he made up for being a dwarf who couldn't fight. Everything he did was based around being able to survive by being smarter than everyone else. Now, for no real apparent reason, he seems to be the dumbest one of the three, while Cersei has become some kind of master evil genius.
All three of the Lannister siblings were great characters to start with. Now Tyrion is a pointless idiot, Cersei is a comic book villain and Jamie is a goodie two shoes. It looks like they're going to make Tyrion even more of an idiot in the last season as well.
It's gotten to the stage where people are mistaking poor writing for the characters, with the characters having ulterior motives, or with changes to the characters themselves. It is also where a lot of the complaints about the acting are coming from I think.
It's a TV show so not all of the acting is going to be top notch...but it sticks out more when the actor is having to try to force you to buy into a character doing something that is actually out of character for them.