Kaluwan

Hello Dmitry. I started playing with a friend in the addendum edition mod on LAN, as soon as we reach the boss (a golem in a crater), from that moment the game starts randomly crashing, and so on until the very end of the campaign, even if I just stand still and rummage in my backpack and he kills somewhere mobs. It crashes even if I am, for example, on the location of the orcs or in a swamp and a friend teleports to me from the starting island (which is available on the local network). What causes the game to crash? the crash occurs at once for both players, it rarely happens that one of us does not crash. I hope for your help.