A typical game will simulate tens of thousands of entities at once, and it all needs to be updated. You can't cull by LOS because the simulation is running eve

A typical game will simulate tens of thousands of entities at once, and it all needs to be updated. You can't cull by LOS because the simulation is running everywhere. There's a lot of what amounts to collision checking, where robot arms are looking for items to pick up or space to drop them off. It's still quite performant. Some of the larger factories people have built are truly stunning in scale, yet can run at 30+ updates a second. People can host games with hundreds of players with relative ease. At the beginning of the game, even quite modest computers will have no trouble with it, but that's not a reflection of what the game is about. Big factories are much of the point.