WCF服务响应45秒的延迟当使用证书安全

我有一个简单的WCF服务，是伟大的工作，直到我添加了证书的安全使用TCP约束力。一旦我做到了，我开始约45秒的延迟，请参阅服务之前收到的消息，并处理。使用Wireshark，它似乎有某种安全协商，然后该服务停止响应约45秒钟，终于它响应客户端和数据遇到。我删除了安全，并再次在附近的实时工作。没有任何人有任何这样的东西的经验？

这里的服务配置:

<services>

  <service behaviorConfiguration="MEXGET" name="AtcSystemService.AtcSystemService">

    <endpoint binding="netTcpBinding" bindingConfiguration="TcpBindingConfig" name="tcpEndpoint" contract="AtcSystemService.IAtcSystemService"/>

    <endpoint kind="udpDiscoveryEndpoint"/>

    <endpoint address="net.tcp://CONW-W7-PHILLP:58009" binding="netTcpBinding" bindingConfiguration="TcpLargeFileBinding" name="tcpLargeFileEndpoint" contract="AtcSystemService.IAtcStreamService"/>

    <endpoint address="mex" binding="mexHttpBinding" contract="IMetadataExchange"/>

    <host>

      <baseAddresses>

        <add baseAddress="net.tcp://CONW-W7-PHILLP:58008"/>

        <add baseAddress="http://CONW-W7-PHILLP:8888"/>

      </baseAddresses>

    </host>

  </service>

</services>

<bindings>

  <netTcpBinding>

    <binding name="TcpBindingConfig">

      <security mode="Message">

        <message clientCredentialType="Certificate"/>

      </security>

    </binding>

    <binding name="TcpLargeFileBinding" maxReceivedMessageSize="1048576" transferMode="Streamed">

      <security mode="Transport">

        <transport clientCredentialType="Certificate"/>

      </security>

    </binding>

  </netTcpBinding>

</bindings>

<behaviors>

  <serviceBehaviors>

    <behavior name="MEXGET">

      <serviceDiscovery/>

      <serviceMetadata httpGetEnabled="true"/>

      <serviceDebug includeExceptionDetailInFaults="false"/>

      <serviceCredentials>

        <serviceCertificate findValue="CN=AtcCert" storeLocation="LocalMachine" storeName="My" x509FindType="FindBySubjectDistinguishedName"/>

      </serviceCredentials>

    </behavior>

  </serviceBehaviors>

</behaviors>

IAtcSystemService GetServiceProxy()

{

    var myAddress = new EndpointAddress(mServiceAddress.Uri, mIdentity,    

                                        mServiceAddress.Headers,

                                        mServiceAddress.GetReaderAtMetadata(),

                                        mServiceAddress.GetReaderAtExtensions());

    var factory = new ChannelFactory<IAtcSystemService>(mBinding, myAddress);

    factory.Credentials.ClientCertificate.SetCertificate(StoreLocation.CurrentUser,           

                 StoreName.My, X509FindType.FindBySubjectDistinguishedName,          

                 "CN=AtcCert");

    factory.Credentials.ServiceCertificate.Authentication.CertificateValidationMode 

                 = X509CertificateValidationMode.ChainTrust;

    return factory.CreateChannel();

}