(With some browsers, the Flash Player plug-in continues to run even after you have refreshed the page. In order to free up memory space, you may need to restart your browser.)
Close any download managers and torrent clients
Try disabling your security software
(It is not recommended to have your security software disabled at all times. However, if disabling it helps with the game's performance, it means that this program takes up a lot of memory space on your computer. Try to find another security software that doesn't affect your computer that much.)
Try updating your graphics card driver
Note: the app is not expected to run at top performance on Windows XP and mobile phones or tablets.