C’mon no way you expected 40k to be in the same instance
There are indeed 15 tiles which hold 150 per tile, however players can still cross between instances, Every tile is a server which is connected to one huge network creating this huge map, 150 per server is still a huge leap compared to ARK’s 70-100 player limit. It is in fact what they said 40k simultaneous players on a single “World”... different instances, in this case you won’t need to transfer stuff between servers such as ark had done.