Why are RDP clients on Linux much slower than on Windows?

I have a Windows 8.1 remote PC, to which I am connecting using RDP from Windows 7 and Linux clients. I noticed that the performance e.g. when scrolling is much better on Windows than on any Linux distribution. I am using rdesktop, Remmina, GNOME-RDP, everywhere the screen refresh is slow and choppy, like VNC. But RDP [does not work like VNC](https://superuser.com/a/32514/140956) , or does it? Why is it so and what is the fastest RDP client for Linux? Maybe [Remote Desktop Connection Client](https://appdb.winehq.org/objectManager.php?sClass=application&iId=3108) under Wine?