Hi,
I have been using Revit 2013 on my laptop for the last few weeks as I have been travelling but now I have put it on my workstation the rendering speed has considerably slowed down despite my workstation being a faster machine. The laptop is running windows 7 and the worksation XP could this account for the difernece
Thanks
Nic Taylor
Video card do not impact MentalRay rendering times, but can affect iRay rendering performance.
I doubt the op is referring to the iRay performance, this can have another causes.
A simple test can be: close all other views, save the project, exits Revit, and open again, than do a render to measure the times.