AutoCAD Drawing Viewer is lightweight, but unfortunately it has poor response time when doing complex conversion tasks and it hogs CPU resources. In particular, it does not respond quickly enough to minor control commands such as rotate, skew, zoom, etc. Furthermore, the application did not recover quickly from crashes and rarely showed errors during the test period.
The Windows version of AutoCAD Drawing Viewer was not able to display certain complicated models and it showed some incorrect signs while transforming them into solid files. The user interface may need some tweaking since it now looks very cluttered, and the interface could definitely use some improvement. In general, the software is not too useful and it performs quite badly in all circumstances. Even if it is used only for simple planning and design tasks, the AutoCAD drawing Viewer would be able to perform these tasks more effectively with the help of other tools and applications.
However, even with those shortcomings, I still highly recommend this product to anyone who uses an AutocAD program. It is very powerful and provides a quick way of viewing previous drawings, even if they have been created with earlier versions of the software. It is also easy to learn and easy to implement on a variety of machines, even if the user is not familiar with CAD programming. Finally, a fully-functional AutocAD drawing viewer is a must have for anyone who wants to get into the world of complex drawings and transforms. As soon as one gets hold of this powerful utility, they will realize that the drawing process is much easier than ever.