执行批处理TSQL脚本的SQL SMO

我正在使用SMO执行一个批处理SQL脚本。在Management Studio中,脚本大约在2秒钟内执行。使用下面的代码,大约需要15秒。

var connectionString = GetConnectionString();
// need to use master because the DB in the connection string no longer exists  
// because we dropped it already
var builder = new SqlConnectionStringBuilder(connectionString) 
{ 
    InitialCatalog = "master" 
};

using (var sqlConnection = new SqlConnection(builder.ToString()))
{
    var serverConnection = new ServerConnection(sqlConnection);
    var server = new Server(serverConnection);

    // hangs here for about 12 -15 seconds
    server.ConnectionContext.ExecuteNonQuery(sql);  
}

有人对此有任何经验,或者有人建议为什么SMO会运行得这么慢?