Darkens the screen when you start the game! (Mortal Kombat (2011))

All kind time of day!
As a longtime fan of MK have version games on PC and PS.
Play via a SONY Bravia TV 32W752 this is the last the top version. And when I first time launched on the new TV favorite MK I like the increased contrast and screen illumination decreased(despite the fact that Stronach everything is as it should). Ie on previous TV which I used as a monitor all the showed is perfect and not faded. New games of recent years that old. And Steam becomes more contrasting and dark(not nice to look at). I tried, but the problem hasn't solved. This problem is only in mortal Kombat and Star Wars Jedi Academy. Please help to solve, maybe someone faced with something similar.

Not long ago, or rather a week ago, changed the video card with Titan on GTX1070
Thanks in advance!