I am using VirtualBox to play Civilization III (from Steam) in Windows 7 on my 13" Retina Macbook Pro. The only problem is it's horrendously slow. It seems like this only impacts screens with animation (which is basically everything). Because other programs work fine, I believe a change of VirtualBox settings might provide a fix. What configurations/fixes should I try?
This is unfamiliar territory for me - thanks for any tips you can offer.