I've just installed my new Surface Pro 3 and connected my 1920*1080 monitor to it via DVI and the Surface docking station.
The external monitor is recognized correctly (as a PnP Standard Monitor, ASUS VH242), and the resolution is set to 1920*1080. Desktop, taskbar, the Charms bar and Windows dialogs look crisp on the external monitor, but all the programs I open appear fuzzy, as if scaled from a different resolution. This only affects the window contents, though, the title bars and control elements (as long as they are the standard Windows elements) are crisp.
It somehow looks similar to the problem some older apps have with the high-DPI display of the Surface tablet itself (because Windows scales them to 150% normal size), but this happens on the "low-DPI" 1920*1080 monitor.
Any idea how I can troubleshoot this?