Constant frame rate aka limit FPS

[Andru]

Yeah I can say that VSync may work with not all video drivers. I don't see any effect when I turn on

Only if this drivers configured to do not use VSync, or if drivers just a cr*p

There is good examples of limiting FPS using SDL_Delay()

SDL_Delay is not good idea because it's just a Sleep function under Windows, and it far from "constant value". But yeah, you can limit your fps to ~61 with this function.