To get your CAD workstation back to peak speed, follow these troubleshooting steps in order: 1. Enable Hardware Acceleration Manually
Type GRAPHICSCONFIG in the AutoCAD command line and press Enter. Toggle the switch to ON . autocad virtual device gdi16.hdi
If it switches back to DirectX 11 or 12, the problem is solved. 2. Switch to a Previous DirectX Version To get your CAD workstation back to peak
Damage to the Windows Management Instrumentation (WMI) can prevent AutoCAD from "seeing" your hardware. How to Fix gdi16.hdi and Restore Performance autocad virtual device gdi16.hdi