I completely agree with Doberman.
I'm layering sections and elevations with multiple viewports to get the look I want. The most complex rendering method I'm using is hidden line, NO shadows. The most complex object in the viewports is a site model. So why does it take 10 minutes / individual viewport to update at an absolute minimum?
Over 20 years ago, I worked in high end 3D graphics on Softimage. I could render a highly complex NURBS based scene with transparancies, refractive indexes, ray tracing for accurate reflections amongst all elements, multiple lights, both volumetric and point / area lights. Similar resolution with production levels of anti-aliasing. I could get a render out of this in half an hour. On a machine that was designed and built in the 90's.. In the background so I can still work.
Wireframe, hidden line, NO reflections, shadows, lights, or anything and I'm still waiting for update to stop killing my machine and holding up my work.
It is outrageous that Nemetschek will heap loads of new un-checked, beta 'features' into the software, none of which work until SP3, but fail to consider the single biggest waste of time the software inflicts on us.
Seriously?