Is my spec enough ??

[MiRai]

Not to mention on certain occasions with the replacement of my videocard from 560 to 760 the monitor turns off and on at random.

I can't say I've heard of such a "bug" before and my three guesses would be that either the card is bad, the driver was not installed properly (or your card just doesn't like that version of the driver), or your monitor is trying to tell you it needs to be replaced. Sometimes a fresh install of the entire OS is the only way to make sure that things are properly cleaned out after a hardware swap (or after years of installing and uninstalling things).

could you guys take a look at my specs and see if enough to run the game smoothly?? or do you guys use certain setting in Nvidia graphic settings or isboxer to make it run smoother?

I am trying to run main screen at 60fps and the 3 others at 25fps.

CPU: i5 3570k oced to 4.4ghz
GPU: GTX 760
SSD: Crucial M4

It would help to know what resolution you're also running, but I'll assume 1920x1080. The specs look decent, but you may need to drop the resolution if you're getting spikes at times. However, the most recent NVidia driver was actually giving me random spikes while I was playing numerous games and I reverted, so it could just be a bad driver. /shrug

I've looked at wiki page on tweaking framerate and the result is always the same any advice is greatly appreciated

And what is the result?