AutoCAD 2015: Switch to dedicated video graphics?

My 2015 installation is not recognizing my dedicated graphics card (AMD FirePro V4900) and is instead using the on-board Intel HD Graphics 3000.  The Autodesk website doesn't list any cards certified for 2015, but surely there must be a way to work around this until Autodesk adds support.

Have any of the beta testers found a way to point to the dedicated graphics instead of the on-board ones?

Thanks