At the request of the Alpha support team, for a separate issue, I recently updated the drivers for my Nvidia GTX 470 from 334.89 to 337.88. I had also cleared the prefs.ini at their request, and that has not yet been changed.
After updating, I immediately noticed that there are issues in game:
Planetary management screen, and if that planet has a moon, the planet rotation stutters horribly until it's moon comes into view. Once that happens, it's smooth again.
Galactic Map: Turn cycles are taking longer while zoomed out, and there is noticeable input and response lag immediately following a turn.
Neither of these were an issue while on the 334.89 driver. I will be reverting to the older drivers tonight, and will update the findings.