It is possible to remove the special effects from the game. This lowers graphical quality but improves performance. In the start menu, at the bottom left of the screen, click on the clog. Click the lit button with the "Special FX on" text on it. It will change to "Special FX off".
The game should not try to post a dozen times on your fb wall, we are going to investigate this asap. Please Snaks if you might contact me directly via pm it would be great to know when that happens, it would help correct the issue.