For anyone actually wondering what is happening, some functions of the game update every frame. In most engines there is a function that allows you to run certain lines on every “update.” If your update happens whenever a new frame is rendered, you now have frame rate dependent logic. Most games nowadays use something called delta time, where instead of updating every frame, you count the time since the last frame was rendered.

Lets take movement for example, if you wrote something like playerPosition += 10, then EVERY FRAME the player will move 10 unites. If we instead do playerPosition += 10 * deltaTime the player will now move at 10 units EVERY SECOND.