The 18.2.9 update significantly improved 64-bit stability regarding PDF export and GPU preview. If you are running a 64-bit system, ensure your download includes this patch.
Disclaimer: This paper is for educational and informational purposes regarding software history and technical architecture. It does not support or encourage the unauthorized download or distribution of copyrighted software. Adobe Illustrator CS6 18-2-9 -32-64 Bit- Download
If you download an older ISO or disc image (like the original 2012 release), you will have version 16.0.0. You must update it to 18.2.9 manually. Most "all-in-one" download packages you find online for already include this update pre-applied. The 18