There are numerous instances in which the game will freeze. Almost always they occur while scrolling on the map, and often once it happens it will continue to happen at that point even if I reload the game from a save. For example, if I have an idle ship, while clicking the button to scroll towards it the game freezes. this occurs not just with idle ships but also with planet colonization, idle shipyards, battles, and almost any other instance where the screen auto centers onto something. It has also been known to occur when opening windows, such as a diplomacy dialogue, research, ideology or governing window. As of this point, there have been ways to get around many of them (some games I have made last a few hundred turns) but most of the time a game will end after fifty or so turns due to freezing. The more actions required in a turn seem to lead to a higher probability of freezing. It is difficult to provide any further feedback on the game when the game continually freezes before colonizing five worlds.