Slowness in Remote Access (RD Gateway and RD Session Host)

Hello,

I'm having strange behavior in performance in Remote Access.

My system is mounted as follows:

1 Windows Server 2012 R2 with roles/applications (GATEWAY):

• RD Broker;

• RD Gateway;

• RD Web Access ;

• RD Licensing;

• Active Directory;

• DNS Server;

• SQL Instance (default instance for RD Broker);

• IIS;

1 Windows Server 2012 R2 with roles (APP01):

• RD Session Host;

1 Windows Server 2012 R2 with roles (APP02):

• RD Session Host;

It turns out that whenever the client accesses (by balancing) to APP01 takes 10 seconds to open the application which is great, but when you access APP02 takes 1 minute and 10 seconds !!!

The only difference so far is this, if I come in as Administrator to GATEWAY and then try to access the APP01 appears as follows:

If I do the same access to APP02:

Can anyone explain to me why this happens and how to get around?

I think the slowness may be related to this type of events.

Thank you.