Screen blackout when alt tabbing

[Mandalore93]

As the title says, the game tends to blacken the entire game window when I alt tab out. Generally speaking this is fine and I can alt tab to my web browser. However, I was just trying to run Victoria 2 and EQ at the same time, absolutely nothing on my power drain and EQ1 blacked out.

I've also noticed that sometimes it does this if I alt-tab when loading. Whether it's form server select to character select or when zoning.

I run Windows 7 on a AMD Athlon(tm) II X4 630 Processor (4 CPUs), ~2.8GHz
NVIDIA GeForce GTS 450 is my graphics card.