Game run very slow

I installed Doplhin version 4.0 and try to run Madagascar 3 Wii (2012 year) but fps are no more than 13-15 fps very very slow . Also sound tearing..and sounds bad
my computer is

cpu Intel Quadcore Q8300
ram - 2GB
video - Ati hd 4600
hdd 500 GB

What to do so i can play games smoothly?