I'm having shaky/blurry screen when fullscreen gaming

sigh...so many problem
I was playing saints row the third and found out that the image is shaky, or should I say flashing
the edge of the image seems blurred, when I brought out steam interface by shift+tab, the shaky text becomes more obvious
I've tried it in various setting, found out it happens only in one scenario:

Output to an external monitor via hdmi, 1080p, dx10/11 mode, fullscreen

The weird thing is , it doesn't happen in the following setup
--turn fullscreen to windowed(keeping everything else the same)
--turn dx10/11 mode to dx9
--using the built-in monitor instead of the external one
--clone display to both monitors

I tried fiddling with different options in nvidia control panel, monitor setting, no good
I googled about it, many people had more or less the same issue, but none of the solution fits in my case...
It happens in Civ5 dx10/11 mode as well
Could it be a problem of the hdmi cable? coz I'm using a cheapo one
And from what I've heard, it should be a signal output issue
Any idea?? Please, I need your help thanks

 

Which laptop/specs?

 

The gpu is with stock 311.48 driver, and I tried 326.41 beta, still the same problem
Do you need the dxdiag as well??

 

UPDATE:

Switching to discrete graphics mode solved the problem!!! weeeeee
It seems like the optimus is causing many problems....Let see if it fixes the occasional stutter as well

 

hopefully it will, I'm glad you found the culprit! Enjoy!