FPS unstable in games for Geforce GTX770m

EdenHazard10

Reputable
May 30, 2014
3
0
4,510
Hello guys, sorry if this is posted in wrong section, I'm not sure actually. Firstly i own an Asus G750JX laptop with Nvidia Geforce GTX770m. The problem is i experienced an unusual stuttering and lagging during gaming especially at cutscene (except for Dota 2) due to unstable FPS (checked FPS using Fraps). For example, even for Dota 2, my game is not smooth at all as the FPS keep goes up and down from 70+ to 30+. I'm sure it's not about connection issues as it also happens to offline games and my brother here have exactly the same laptop with me but does not experience this problem. Here's what i've done to overcome this issue but failed :

-set Prefer Maximum Perfomance at Power Management Mode setting
-set Single Display Perfomance Mode
-set Vsync on/off
-try old driver and update to latest driver (v337.88 currently)
-refreshing my Windows
-remove Nvidia HD Audio (solution from other forum)
-for Dota 2, i've set the graphics level to medium (eventhough i believe gtx770m is more than enough to handle Dota 2 even at high graphic level)
-Tested MSI Afterburner while playing FIFA14, GPU's temperature averagely 50-60, CPU 60-70. (normal referring to Google)

The thing is, i just experienced this problem since last month. Before that, i played all the games smoothly. Please help guys, i've run out of ideas on what to do. T_T