On a system with dual graphics cards where one is an integrated on-board unit (commonly Intel HD Graphics) and the other is a discrete NVIDIA or AMD graphics card, AutoCAD utilizes the low-end video instead of the high-end display adapter. This video will show you how to configure Toolbox (AutoCAD) to use your highest-performance graphics card on your computer.
If you are in the market for a new graphics card, make sure you choose one that has been certified by Autodesk: