I have recently setup RDS Session Host collections so that users can access four separate servers via Remote Desktop (from both PCs and thin-clients). The session hosts are Server 2012 R2 VMs running under Hyper-V. When users connect via RDP, the login can take upwards of 90 seconds from the initial "Welcome" screen to the "applying computer settings" to the various group policy processing messages before their desktop is finally accessible to them.
Yet, if I login locally to any of those four servers, the speed of the login is much more normal.
I have already disabled the Smart Card service in an attempt to speed these logins up.
Can anyone suggest anything else I can look into?
Much appreciated! :-)
Check event logs on the server(s) for any errors.
Check firewall logs for any indication of delays or problems. In addition as a test remove any restrictions on rules related to the RDS servers and give the rule the highest priority.