Community Tip - Did you get called away in the middle of writing a post? Don't worry you can find your unfinished post later in the Drafts section of your profile page. X
I think games are optimized for D3D while CAD software is optimized for OpenGL.
Maybe I am wrong but this has been the case in the past. Most high end Professional Graphics cards are based on OpenGL for this very reason.
Then again, I could be wrong on this. 🙂
"Too many people walk around like Clark Kent, because they don't realize they can Fly like Superman"