Since 1.4, when using Fullscreen (windowed) option (never with normal Fullscreen option). I have those issues:
I have an AMD Radeon HD 6800 Series. I play with almost all in Hight EXCEPT for the shadows (I have them OFF).
When I want to see my items stats (to compare for example)
And this happens even with normal Fullscreen:
(the loot "light" is not as it should be).
It's not a "upgrade your graphic card issue. It's upgraded.
This only happens since 1.4 came out so...solve it.