Revit 2013 Very Very Slow ... Why?

[mark.98140]

I have installed Revit 2013 on my Imac with an ATI Radeon 4850 and 16mb ram and it is very slow graphically when compared to Revit 2012. Does anyone have an explanation? Pls?

[crullier]

have you turned on or sometime off - hardware accel?
It running fine on my imac under bootcamp.

[jseastrunk]

I have tried running Revit 2013 on imac with 16GB of ram using ATI Radeon HD 5750 and the software will not open. 2012 works fine, all other 2013 products work fine, except Revit will not even open - it crashes every time before even opening just after splash screen. Autodesk says update drivers - yet drivers are up to date.

have you turned on or sometime off - hardware accel?
It running fine on my imac under bootcamp.