If you are experiencing lag or performance issues on Windows 7 64-bit, expert users on the AUGI Forums and Autodesk Community suggest the following: System requirements for AutoCAD 2012 - Autodesk
The idea of having the full power of AutoCAD on a USB stick is undeniably appealing. The promise is simple: plug your drive into any Windows 7 64-bit computer and work on your designs without installing a single file. This would be the ultimate in convenience for freelancers, students moving between labs, or professionals who need to work on multiple machines. autocad 2012 portable windows 7 64 bits better
Attempting to find a pre-configured, 64-bit "portable" AutoCAD 2012 optimized for Windows 7 will lead you to a digital minefield: file-hosting sites, torrent trackers, and sketchy forum threads. Common sites where these packages are shared include Wuyou, 51NB, and various file-hosting services like MediaFire or usersdrive. Keywords like "AutoCAD 2012 X64简体中文绿色精简版" point to popular repacks. If you are experiencing lag or performance issues
The appeal of a "portable" version of a large program like AutoCAD is understandable. The appeal of a "portable" version of a
Faster startups, instantaneous ribbon tab switching, and smoother 3D orbiting compared to older versions.
While "portable" versions of AutoCAD are often sought after for their ability to run from a USB drive without a full system installation, they are not officially supported by Autodesk. Autocad 2012 and Windows 7 64bit - AUGI Forums