I came here to post about this show and Muddy beat me to the punch!
I agree that there's a lot of bad acting, a lot of stupid dialog, characters do every stupid thing they can do. I have a dozen of other similar complaints.
On the other hand, I could not tear myself away from it and binged it in 2 days and just loved it. Lower your expectations and just watch this. It could have been done much, much better but if you like sci-fi, this is worth the 7.5 hours of your time.