Domain Controller in AWS with pfSense - Extremely slow UAC popups
I got a Domain Controller running in AWS. The VPC is connected via IPSec to our company.
pfSense is handling DNS and DHCP for the internal network.
I just set the Server (Win Server 2016) up a few weeks ago and just started throwing clients in the domain.
Now, if the User is not local admin or domain admin and wants to install anything, the UAC prompt pops up extremely delayed, like 1-2 minutes delay.
Also when I try to add the user to local admin on the client the response time of the name resolution for his username takes extremely long.
I suspect DNS (as always), I guess I missed something in my setup.
Anyone has an idea what could cause the problem?