Changing the max number of pc players is not enough. You have to change the ID of all the NPC players as well so that they are, in the same order they are now, the ending selections. Then there may be some other areas... honestly this is more complicated than you probably want to do if you're not able to work past this intuitively and I'm not wanting to take the time to explain how. I actually reduced it to 50 a while back because 100 is simply too taxing on our limited memory archaic game engine that we cannot improve to the point where so many players becomes a valid prospect for much of a game length. We've made grand strides in improving memory costs but we still cannot increase how much memory the game will crash at so it's all just economizing - like this.