OK, just got Nvidia's 158.18 driver loaded up, and same deal.... choppy scrolling unless I got the menu bar on the bottom hidden.... see above for my system specs.
Yup - I installed the latest Nvidia drives. Performance has improved, but only marginally. Removing the UI returns the camera to pre-Vista operation. Otherwise, with the UI engaged, the camera is choppy at best.
As for the whole Ditch Vista/Ditch GalCiv responses... by and large those of us posting in this and other threads about this problem obviously don't care to do either, for all of our own personal reasons. And of course, not every game made prior to Vista (or prior to any new operating system) can be made compatible. Whether or not is should is a different questions - but clearly the folks at Stardock are interested in resolving the issues and making this game technically available for as many of their customers as they can. To suggest otherwise is immature and typical of the internet tweenies and teens who post everywhere about how r0xx0r their l337 system is and how they can pull off headshots in Counterstrike/BF2.
As someone in IT, I work with a vast array of OSs, and to be honest, Vista was a major improvement over XP in terms of reliability and services. The only true shortcoming is the lack of driver support - so for many, upgrading isn't necessary/sensible until service pack 1. For me, I have access to XP and run the game fine; but I am keenly interested in getting this game running like butter on Vista.