These tweets have some interesting look at the world AIs: E.g. apparently traffic can't handle disturbances at all and it's "solved" by very aggressive despawning of things you don't look at. (To be clear, every open-world game will do some amount of that, but this is extreme and if the AI can't handle existing for longer they can't easily fix it)

https://twitter.com/JumpOvertheAge/status/133892916630199091...