Firepro W5100 Lags in Revit 2014

[jbrown156]

specs

i7 5820k
kingston 120gb ssd
1TB seagate hdd
asrock x99 extreme 3
32gb crucial ram
cooler master nepton 140xl
corsair rm 750i psu
amd firepro w5100 4gb

The system is brand new all drivers are up to date. all my programs work flawless except for revit 2014 which lags for no reason.. the program never lagged before when i had a old radeon 6850 installed in it, but as soon as i upgraded the issue came along . anyone here can help me out please ?

 

[reedo_43]

https://knowledge.autodesk.com/support/revit-products/downloads/caas/downloads/content/revit-2014-update-release-3.html