If there is one thing that survives the resolution drop intact, it is the acting. Douglas Henshall’s performance is all in the eyes and the posture. Even when his face is slightly blurred by compression artifacts, the exhaustion in his slump is palpable. He carries the weight of the island on his shoulders, and you don't need 1080p to see that.
The supporting cast, particularly Alison O'Donnell as Tosh, shines through the pixels. Her character’s arc in this season has been rocky, and her loyalty to Perez is the emotional anchor of the finale. The intimacy of the dialogue scenes—shot in close-up—translates well to low resolution because the sound design and script do the heavy lifting. shetland s02e04 360p