Talk:Frame delay/@comment-136.152.142.11-20170427220614/@comment-2001:44B8:3113:6D00:2C9B:56E8:8011:5D2D-20171221123706

Rendering is generally decoupled in modern games (this was only the case in the past primarily due to the vsync interrupt being the most reliable real-time source). That being said; the "20fps" is probably just referring to the rendering frequency (which itself being derived from the number of samples per animation)

As for the game simulation, given the nominal time values of various game mechanics, I'd say the [simulation] timestep is 16ms (60Hz) or possibly uses a continous model (unlikely however).