Sounds like the known bug in Windows 8.
Update your video card drivers from the GPU maker's website.
Or set the GPU mode in Photoshop down to "Basic".
Microsoft hasn't released a fix yet, but those should work around the bug.
I've updated the Graphics Card and Set the GPU to basic. I'm still having
this issue. I've only developed this problem in the last weeks.
I've done both fixes and im still haveing the same issue. I didnt have this problem a month ago. It sosent happen right away but after a few minutes of working with my photos.