[automatic6131]

>The developers have solved this by making the player the origin instead

Perhaps such a brilliant idea came to them in a dream. But maybe they forgot how they did it in another dream.

[sigmoid10]

This is actually a pretty common practice and has been used for a long time. Here is a great explanation by developers of Kerbal Space Program, who built a solar system sized physics sandbox using the same method (and a few other tricks) in Unity: https://youtube.com/watch?v=mXTxQko-JH0