I found this to be a perfectly fine miniseries and nothing more. The dialogue was nothing special, the characters (besides Dyatlov) weren't memorable, and the story was excessively slow and drawn out. The first and last episodes were great intense looks at what happened in the control room, but the middle 3 episodes are pretty much just the 2 dull scientist leads trying to figure out what happened, it's not exactly gripping storytelling.

Likely overrated because it came out at the same time as Game of Thrones season 8.