eli5: Older 3d videogames get crazy when subjected to modern framerate. Why is that, and why did binding game’s engine to FPS became a trend in the first place?

Question

eli5: Older 3d videogames get crazy when subjected to modern framerate. Why is that, and why did binding game’s engine to FPS became a trend in the first place?

In: 6

Answer 1

The why is because a lot of updates and computations use framerate to control speed or occurrences of something. There was a much lower limit so now the stuff runs so quickly the computations go out of bounds or just happen too quickly.

Its still done because its an easy way to normalize behavior across hardware for players.