Reduce arena RAM

Signed-off-by: Lixfel <agga-games@gmx.de>

src/de/steamwar/bungeecore/SubserverSystem.java

@@ -107,7 +107,7 @@ public class SubserverSystem {
 
         File directory = new File(SERVER_PATH, modus.getFolder());
         ProcessBuilder builder = node.startServer(
-                modus.serverJar(), directory, worldDir, mapName, port, "2G",
+                modus.serverJar(), directory, worldDir, mapName, port, "512M",
                 "logPath=" + mapName, "config=" + modus.getConfig(),
                 "fightID=" + eventFightID, "ranked=" + ranked,
                 "checkSchemID=" + checkSchemID, "prepareSchemID=" + prepareSchemID,