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src/de/steamwar/spectatesystem/util/WorldLoader.java

@@ -63,7 +63,7 @@ public class WorldLoader {
                 }
             }
             Bukkit.unloadWorld(world.getName() + "-backup", false);
-        }, 20);
+        }, 40);
     }
 
     public static void fillTeamArea(int teamX, int teamY, int teamZ, int sizeX, int sizeY, int sizeZ){