I followed the forum's advice and set virtual memory at 2.4Gigs (which then goes up to 3.6Gigs later on). Video driver is from July 2006.
System Specs:
Intel Core Duo T1350 1.7Ghz
ATI Mobility Radeon X1300 256MB
1024MB DDR2 RAM
So definitely not top of the line, but decent enough to play at med-high I think (unless I'm wrong!)
At first, when I open up the game, it runs fine; loading doesnt take that long and saving literally takes less than a second. But when I decide to quit a game and start up a new one (or load another saved game), performance decreases dramatically - framerates are still fine, but it takes much longer to transition between turns.
Eventually it says that the system has run out of memory and that it can't save... which apparently wiped out both of my autosaves. Another possible explanation is my custom ship-building technique-- usually I pile on about 20-25 accessories alone onto my ship models, which could affect performance (also I usually play on gigantic, albeit with habitable planets at 'rare')
Any help would be greatly appreciated.