Ser Meryn Frey

How enormously ridiculous that Jaime survived AND swimmed a mile in full plate armor. Seriously. What the F is this?

I saw Littlefinger headshot Gendry yesterday. I think the film's name was "Blitz" or "The Blitz". Why does Littlefinger use a cancer voice in a Game of Thrones when the actor obviously knows how to use a normal voice?