Hello experts. We have this same problem across many different clients with 2012 R2 RDS server farms.
Users report that their desktop flashes continuously through out the day. We witness this many times as well. Users are working on a 2012 R2 RDS session host. They are utilizing folder redirection, so their desktop icons reside on a file share. I can simulate the same effect if I hit F5 to refresh the desktop. All icons flash. This is happening on many rds server at many different clients.
I found this post here with an identical issue:
http://discussions.citrix.com/topic/305854-desktop-icons-flickering/
The recommendation is to "creating on the registry the REG_DWORD key HKLM\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\Explorer\NoRemoteChangeNotify with value 1. "
I know others have this problem as well, I'm curious as to how to resolve the issue, and if the change mentioned above will have any negative affects for users. Thanks in advance.