Screen Bug after Ending Process.

O.K. To start this off.

Every time theres lag (Everytime since new patches.) and I close Crossfire using Task Manager, the screen stays just as bright as when Crossfire was on.
I don't know if it's weird but normally when I start the Crossfire application, the screen blacks and then becomes EXTRA bright. So when I close the application using Task Manager, it stays bright as hell making it hard to see anything.
If I close the program normally using exit, the screen closes like normal and the brightness goes back to before Crossfire was openned.

If you can't understand my lag, it's just when I lag only in lobbies, shops, storage, etc. But my ping is Incredibly low in games (7 - 20). So it's my connection rate/speed to get into things. Which is incredibly annoying. (If you have solution for that too, tell me.)
So I want a way that I can close Crossfire when my connection is laggy without messing up the brightness.

If you can help, help me please. If you can help with my connection rate PLEASE help with that too.