system
Given the following post, respond as if you're commenting on Reddit:
human
ELI5: Why do some video game and computer program graphical options have to be "applied" manually while others change the instant you change the setting?
gpt
That mostly depends on game engine's source code. Some are good, some are not so. Usually, resources need reloading when settings changed, and sometimes API requires recreating all objects. Usually when game requires restart to apply some options, that's because game engine need all resources to be reloaded under new settings and it's easier to do it just by restarting than by actual reloading.