Ok so I don't think it's the drivers, but I've been wrong before, I'll love you forever if you can help me out, haven't played in months now, I'm missing so much!
If you're run game though Steam you can try this: 1 - Try to run game without "Steam Community Overlay": Right click the game in your Library -> Select Properties -> On the General tab, uncheck the box next to Enable Steam Community In-Game 2 - Try to run it using standalone launcher: https://store.uberent.com/download/pa And yeah: AMD start dropping support for Vista in their mainline drivers so it's time to upgrade. At least their website don't show any new drivers for Vista. Though you can try install one for Windows 7+, but it's might not work well: http://support.amd.com/en-us/download/desktop?os=Windows 7 - 64