Please Help Me out

[kazami]

I have been playin for a month now and have no proiblems whatso ever uptil now. since the last 2 days every few time i switch skills the game gives me a moment where it freezes. i have checked my graphics card AMD Radeon HD 6700 Series and also updated its softer and its working f9 so could u please help me out cos its gettin really difficult to play this has been happenin only for the last 2 days