Okay well maybe this well help.
Microsoft Windows 7 Ultimate x64
DualCore Intel Core 2 Duo E8500, 3166 MHz
4096 MB (DDR2-800 DDR2 SDRAM)
ATI Radeon HD 4870 (1024 MB)
I have 20gigs free on my hd and all drivers are up to date
I've been searching the forums and google but still haven't come up with anything. Only thing i'm finding is people having issues with the game freezing completely. My game on the other hand freezes for 5 seconds, continues as normal for a good 15-20 seconds and freezes again for 5 seconds. This goes on for the entire game. Only started to get the problem a little bit later in the game when i was on the verge to completely maxing out all my upgrades.