Does small scale mean bad physics?

I plan on making my game’s scale fairly small in order to make a large map before I hit the “null” point where I’m so far from the origin the game cannot render anymore. However I’m concerned on wether or not this will affect any physics with the small scale, this is something I will hide from the players they will not even realise they are small.

The sort of physics we are talking about is vehicles.

As the render engine starts to die out far away, I don’t think physics are affected. I don’t believe you should have such a massive map or why would you want to do that, many games separate huge maps into multiple games

Having a decently sized realistic map with custom textures without any loading screens when switching between parts of the map.