quality of the episodes aside I think one thing that makes the problem of the plot taking a while to start worse is the way some people watch it.
like, treating both segments as two separate "episodes," watching one of these episodes a day/week/month, and then wondering why there seems to be no plot progression
i'm not saying everyone absolutely has to watch the first season, but it's so short that I don't understand why everyone watching for the first time spaces the episodes out so far apart. if you really want to you can watch the entire first season, all at once or in between doing other stuff, in a few hours or days.
if it's taking you months to get to a plot episode maybe it's not even the show's problem, it's yours.
(note I'm not referring to someone who find it so bad or whatever that they literally don't want to watch that much at once. i'm referring to the weird general viewing habit of treating one episode slot as two and stretching the season out forever when honestly attempting to get into it)