Since installing the UD-3000 with my Surface Pro, the startup of most Metro (Start) Apps is slow, taking anywhere from 10 to 18 seconds to display content. This impacts any apps that pull data from the Internet (News, IE, Video, Games, etc.).
DisplayLink is aware as of March 10th 2013, and they claim to be working on it. Although one solution is to remove all of the drivers, there is a workaround that you can use in the meantime.
Changing one of the IE 10 advanced settings reduce the start time of these apps to less than 2 secs. Go to: Internet Options >> Advanced Tab >> Accelerated Graphics topic (1st one) >> Select Use Software Rendering instead of GPU* (*requires restart).
The impact on the CPU load seems negligible (looking at the Task Manager/Performance screen).
At least this will keep me going until the real fix is available.