I was once told that you should never re-draw a frame if the game logic has not changed since the last draw. 

Assuming game logic is updated once every tick, and assuming a game runs at 40 FPS @ 20 ticks/second, does that mean that every two consecutive frames will be exactly the same? If so, is there any visual difference between a game running at 40 FPS @ 20 ticks/second versus a game running at 20 FPS @ 20 ticks/second?

Perhaps I don't understand game loops that well, but it seems to me that ticks/second is a limiting factor of FPS.


Question: Creating fake (test) data
Answer: If you installed the Devel module, there should be a submodule on the admin/modules page called Devel generate:



Enable it, and you should have some new menu entries in admin/config/development for generating fake conent, menus, terms, users, and vocabularies.