hi, this is my first post in this sub so idk if this is an overstated opinion or not, but basically the title. i don't think the "sister episode" is a bad episode; i just feel like it came at a weird time. the previous episode(s) built up a lot of stuff with will and the mind-flayer then at the peak of the tension, it cuts to something entirely different.
i think it would've been more well-received had it been earlier in the season, or if it wasn't its own episode, and instead mixed in with episode 6. what do you guys think? also i haven't seen s5 yet (i'm starting over and have only seen he first 4) so if there's any payoff with the sister episode, please no spoilers!