Photoshop CS6 flickering black boxes on MBA 2013

Hey everyone, my macbook air 13" which i got a little over a week ago has a problem with Photoshop CS6. It flickers black boxes everywhere whenever I zoom in closely and use the tools such as the eraser or burn tool.

I was wondering if this was a common issue or if it's something I have to look into individually for my own mac.. Thanks! 🙂

PS. I'm using OS X 10.8.4