Windows 8, Lenvo USB 3.0 dock = lag + fuzzy image

[lasse]

Hi,
I have a setup consisting of a Lenovo X1 Carbon, Lenovo USB 3.0 dock (0A33970/1) and two external monitors connected by DVI running at 1920x1200.

I installed the 7.0 M2 driver before connecting the dock to ensure proper installation. So far so god...

However I am having performance issues on the external monitors. scrolling, moving windows around and even moving the mouse pointer causes lag and poor image quality (best described as a fuzzy blink).

I have attached support files for further investigation.
Please help me solve this issue!