This release of AutoCAD includes a new graphics engine, which provides a better display effect on most high-end GPUs that support DirectX 12.
  
The new graphics engine provides: 
	 
- Improved zoom and pan performance for drawings with many TrueType texts, long polylines, or solid hatches in 2D Wireframe Visual Style 
		
- GPU memory usage has been optimized when opening multiple drawings in DirectX 12 mode 
		
- Removed support for DirectX 9