Why do some video game and computer program graphical options have to be “applied” manually while others change the instant you change the setting?

Question

Why do some video game and computer program graphical options have to be “applied” manually while others change the instant you change the setting?

In: Technology

Answer 1

Because most game settings are loaded only at the start of the game. If you want to reload new settings again, you must restart the game. P.S I am a game developer.