Taskbar low resolution on displaylink monitors

[EricL]

I have 2 1920x1200 monitors connected to my surface 3 with a displaylink (thinkpad) dock. The taskbar icons seem to be very low resolution on the extended monitors although the text etc is fine. The images are attached. Look at the lines in the onenote icon, the blue portion of the folder for explorer below the folder itself, and the skype outline.

I'm on win 10 latest drivers 7.9 M2.