This might be the Amazon prime version, but with very good bandwidth, it apoears to be shot in high resolution low frame rate, around 5-10fps. It looks horribly jittery, notably the Alaskan episode the last one. I would give this a 7 if I could stand the jumpy footage.
Review of Secrets of the National Parks
Secrets of the National Parks
(2020– )
Great subject, so much beauty is spoiled by low frame rate
7 January 2021