Sad that this series based on the book which I read was not what I expected or nearly as good as the book, but it got better after the abysmal Episode 3 exclusively devoted to tightening a bolt on the generator! I'd give it a 5 as it is fairly watchable.
It’s almost like I was watching a different episode than most people, I absolutely loved episode 3, the intensity was insane. The only thing I found suspicious/weird was the steam vent not actually pushing the blades on the generator after it was repaired. I’ll have to watch that part again some day but it just started spinning for no discernable reason.