For the second one, the game freezes because you need to put in the mapcoordsmins and mapcoordsmaxs keys and values. To do this, press “N” to bring up something which I can’t remember what it’s called, and then make sure it’s on ‘worldspawn’, and enter in the key named mapcoordsmins and for a value, put the top-left corner of your map in, like -1024 1024 just like that, without commas or anything. Then you need to enter in a mapcoordsmaxs and put the opposite square corner, which for this example would be 1024 -1024. To get a perfect square, you can also create a square brush, and then use those coordinates. I’m not very experienced, but I’m just trying to get across a rudimenty solution. Maybe someone more experienced can put across a simpler quicker way.