I have found a solution that fixes the slow graphics performance problem on some PCs running IronCAD 2012.
On a number of PCs there have been extra Display Adapters installed that are interfering with HOOPS (IronCAD's real-time graphics engine).
To check your PC:
1. Go to the Windows Device Manager, this is typically found in the Control Panel, sometimes under System depending on how your Control Panel is setup.
2. Expand the Display Adapter item.
3. If you notice any listing there other that your graphics card, that could be the problem.
So far these are the three offending drivers I have found installed on various PCs:
ConfigMgr Remote Control Driver
I have found that uninstalling these other drivers has fixed the performance problem in about 60% of the cases I've found so far. Just right-click them to uninstall them. I think they are drivers from free screen-sharing programs.
After I uninstalled these remote drivers all my problems seem to have gone away. IronCAD 2012 is running great now. Thanks again Kevin