Update ExitMethod

unturned.kvp

@@ -24,8 +24,8 @@ App.AppSettings={}
 App.EnvironmentVariables={"LD_LIBRARY_PATH":"./linux64:%LD_LIBRARY_PATH%:./Unturned_Headless_Data/Plugins/x86_64/","SteamAppId":"304930"}
 App.CommandLineParameterFormat=-{0}={1}
 App.CommandLineParameterDelimiter= 
-App.ExitMethod=OS_CLOSE
-App.ExitTimeout=10
+App.ExitMethod=String
+App.ExitTimeout=15
 App.ExitString=shutdown
 App.ExitFile=app_exit.lck
 App.HasWriteableConsole=True