I updated my working station coming from another laptop and had 2 monitors connected (in hdmi and usb->vga adapter). Autodesk 3d applications Revit, 3dsmax all worked fine in all monitors, the usb dongle was using laptop's CPU/GPU to show image.
With new laptop I got D3100 docking station (as usb->vga adapter has some flickering on 5510) to connect my monitors. But mentioned applications do not work at all on that, anything considering 3d runs awfully slow. Using the usb->vga dongle it works well beside flickering.
Is it how it supposed to be with D3100? Can it be forced to use laptop's GPU for showing image (like the cheap usb->vga/hdmi adapters)? This docking station doesn't make any sense now.