I'm watching GOT now and already past Season 2. Season 5 seemed OK, but Season 4 and Season 6 also have the same problem where Episode 1 is actually 10.
It's very frustrating trying to watch it like this as the name of the season is correct and even the subtitles are correct, but the video and audio are the wrong episode. If you're watching the series like I am, it's very hard to know it's the wrong episode until you start hitting stuff you don't understand like "wasn't that guy in Jail?" Very, very frustrating.