I keep thinking about what it is like to do the physics on the server, so that it is authoritative, and thus avoid cheating, in a game that manages the world by noise, ie the collisors are being generated from the player walking. If the server also generates the world, how do you deal with several players? I can not imagine that it manages the server-side world to give the last word, because if a player is far from each other, they would be in different chunks, so the game would have to run the algorithm to generate for each of those chunks.
Or is it simply ignored, and the server is not authoritative in this type of game (minecraft, terraria, No Man's Sky, or any other that generates logic by noise)?
The problem of not doing this on the server is that players can cheat and send what features are where they are not or which mountains no longer collide among others.