Black screen when connecting RDP windows server 2012r2?

Question

Windows

Hi all.
There is a terminal farm.
2 terminal servers work in pairs, the first one has the roles of RD Connection Broker.
There are no additional roles on the second terminal.
There is a separate server that stores user profiles.
About three months ago, the following problem appeared:
The Remote Desktop Service periodically hangs, after which all sessions fall off. At this point, you can only get to the server locally or via ipmi. Restarting the service does not help (status Stopped), you have to forcefully terminate the service process. Before the service freezes when authorizing via RDP after authorization, a black screen, CTRL + ALT + END sometimes helps, sometimes not.
Suspensions during connection occur alternately on both terminal servers, there is no system.
Config:
OS: win 2012 r2
Last updated for October 2016.
Performed actions:
On the server:
In the properties of the network adapter, disable the "Large Send Offload" parameter,
In group policies, the "Select RDP transport protocols" parameter is selected "use only TCP"
Disable autotuning " netsh interface tcp set global autotuninglevel=disabled"
On clients:
Disable the "Persistent bitmap caching" option in the client's rdp properties
.
I would be grateful for advice and recommendations.

Answer 1

Do you restart the server periodically?
I have a server where programmers work, therefore it has a unique load and often high. As a result, you have to reboot it at least once a month, otherwise he will do it himself through bsod.
It just so happened that 2012r2 accumulates some kind of muck at a high continuous load and the rdp service just hangs. The server where two people work has not rebooted for a year and no problems.

Answer 2

I used to write. We've been dealing with this problem for half a year now.