Anno 1602 aristocrats

Hi old school gamer I really like this game, much more than 1404 or 2070. However the islands were ridiculous small in the classic game. With the king edition you can create your own maps. First I tried to create so much large islands (like the 2 big in the middle) as possible. But the game crashed every time I started with more then 2 huge islands. I also realised that only 2 mountains on every islands are available for metalls (iron/gold). Except the two huge islands and the gold islands i avoid rivers