Nostalrius Begins - Quality wow vanilla realm (1.12)

I've been having this ever since launch
Specs:
Processor Intel(R) Core(TM) i3-2120 CPU @ 3.30GHz
Manufacturer Intel
Speed 3.3 GHz
Number of Cores 4
Video Card ASUS R9 270X Series
Manufacturer ATI
Chipset ASUS R9 270X Series
Dedicated Memory 4.1 GB
Total Memory 4.0 GB
Memory 8.2 GB

[img]http://s18.postimg.org/dm9k5o8bc/LUCA.jpg[/img
Thanks for the help