This isn't a horrible acting, there's NO ACTING. I couldn't finish watching 1st episode because dialogs feel fake, no emotions. Also ...Bad scripting, horrible directing...
People wake up on the island, everyone is with amnesia and nobody is having a panick attack, nobody seems to be REALLY worried about it. The black guys casually walks to a cuople girls he's seeing for the first time after waking up with amnesia and his first words are "hey, there are others around the corner.." What???!!!. The girl with a short hair decides to lay down for a tan wthen others a helping like a character in the "Lost" with almost same dialog lines. Tbh, I think "Lost" is lost after a first season with too much unnesserary mystery and gragged out scenarious but AT LEAST acting was present there.