Hi,
Have you tried to change the Remote Desktop Connection properties before you connect to the RDP? change the settings under "Display" and "Experience" tab.
Sometimes, the RDP flickering is related with some RemoteFX which is used to enhance the display quality, [Computer Configuration\Administrative Templates\Windows Components\Remote Desktop Services\Remote Desktop Session Host\Remote Session Environment] you
can turn off RemoteFX related policy as a test.
Yolanda Zhu
TechNet Community Support
