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by jharsman 3908 days ago
Traditionally TVs only support 60 Hz refresh rates (or 50 Hz for older PAL sets), so you either render a new frame for each frame the TV can refresh, or you display a frame for two TV refreshes.

Thi sisn't strictly true any more, since many TVs now support 72 Hz (to be able to display 24 fps content like film), but my guess is that doesn't have wide enough support to rely on.