So I'm just playing a game on my laptop on medium settings and it runs smoothly with no lag or anything since I've got my NVIDIA settings to better performance than quality, but after a minute of playing a game (Outlast, Tribes Ascend, Team Fortress, Saints Row IV, etc.) I get a black bar appear for a millisecond and then every goes… Laggy. I'd say something like 10fps and also, once I move my mouse to the right, in the game, I look to the right a second afterwards._. So response time has also been reduced. And the same happens on lower settings. The only games that don't do this are games such as Minecraft and those old Dawn of War games.
Now, the black thingy isn't a screen but more like a thick line that appears in the center of the screen. I didn't get this before, but now all of a sudden I'm getting it on almost every game. Yeah I can still play but I can't engage in team fights, combat of any sort and that stuff. Even when I press W to move forward it starts moving a second later.
Do you guys have ANY idea how could I solve this?
SPECS
-Laptop
-Windows 7 x64 bit
-4GB of RAM
-Intel Core 2 Duo CPU T9600 (2.80GHz)
-NVIDIA GeForce 9600M GT