Game laggs with good computer

[ignacas]

Hi there So I jus bought a new laptop.
Intel® Core™ i5-2430M Processor (3M Cache, 2.40 GHz), Sandy Bridge
8GB DDR3
NVIDIA ® GeForce ® GT 540M 2GB

It's not the best , but it's pretty good. So yesterday i played GTA 4 and Saints row the third on highest settings but today I installed Dirt 3 and then GTA 4,Saints row the third started lagging on lowest settings.

Perhaps Dirt 3 has installed some apps that slows my computer.

Please help me

 

[AntiZig]

all i can tell you is try using system restore and uninstalling dirt3

 

[mcnumpty23]

perhaps your antivirus started a scan in the background?

use gaming mode if your antivirus has it

 

[bullgarian]

most likely updates were going on...or you put the laptop on top of your blanket