Frank Underwood: [Stands between the portraits of Kennedy and Reagan.] All three of us took bullets. [Nods to Reagan's.] Well, I know why we're smiling, we survived.
When Doug Stamper sits down at his laptop and throws the contents of his cup at the screen, the image immediately freezes and distorts. This would not happen so quickly in a real world event. It may eventually happen but not instantaneously.