How can I make my computer not slow after installing Starcraft 2?
There could be any number of reasons this is happening. I hope that you’re not trying to use other programs while you’re running Starcraft 2, since the game will lag everything else out like crazy. When you’re not playing the game, exit out of it. If you are exiting out of the game and you system is slow, then the only reason that your system would be running slowly would be that your hard drive is nearly full. In that case, delete or archive-off large files that you don’t need on the hard drive and then defrag your hard drive (if you’re running Windows).