MMH5.5 - Heroes of Might and Magic 5.5

Does it happen on a specific map or on any map you try? When does it happen? after turn 1 or later?

Playing with 8 players; set up teams of 2x2x2x2; in the first team, it's me and a friend, the rest are bots. On the very first turn, after we finished and passed the turn to the bots, they started moving very slowly, and the last one got stuck in the middle of his turn. My friend couldn't stand it and left after waiting for 20 minutes.