Gaming and ubuntu in general with 120 hz monitor

[ponask]

Hey guys

I recently installed ubuntu 13.04 on my machine. I did a apt-get update/upgrade and installed all drivers and stuff, including nvidia settings driver.
My problem now is that i can't' really run anything in 120 hz. My monitor is benq xl2411t and supports up to 144 hz. I have the dual dvi cable and everything so its not a hardware problem, its also working on windows.
So, my problem here is that when i run a game, in this case counter-strike, in 100/120/144 hz, the screen flips out. Some times i can't see anything, sometimes i see part of the game etc.
This only happens when i run the game in fullscreen. Also, in ubuntu i have set the resolution to 1920x1080 in nvidia settings. I can feel that my mouse isnt lagging and that 120 hz is on, but all the windows when i drag them around is really laggy and it feels like 60 hz.

I am not good at explaining but i hope someone understands and maybe can help me set up 120 hz for real.

If it matters in any way here is my xorg.cfg

# nvidia-settings: X configuration file generated by nvidia-settings
# nvidia-settings: version 310.44 (buildd@batsu) Wed Apr 10 17:23:05 UTC 2013


Section "ServerLayout"
Identifier "Layout0"
Screen 0 "Screen0" 0 0
InputDevice "Keyboard0" "CoreKeyboard"
InputDevice "Mouse0" "CorePointer"
Option "Xinerama" "0"
EndSection

Section "Files"
EndSection

Section "InputDevice"

# generated from default
Identifier "Mouse0"
Driver "mouse"
Option "Protocol" "auto"
Option "Device" "/dev/psaux"
Option "Emulate3Buttons" "no"
Option "ZAxisMapping" "4 5"
EndSection

Section "InputDevice"

# generated from default
Identifier "Keyboard0"
Driver "kbd"
EndSection

Section "Monitor"

# HorizSync source: edid, VertRefresh source: edid
Identifier "Monitor0"
VendorName "Unknown"
ModelName "TOSHIBA-TV"
HorizSync 15.0 - 68.0
VertRefresh 23.0 - 61.0
Option "DPMS"
EndSection

Section "Device"
Identifier "Device0"
Driver "nvidia"
VendorName "NVIDIA Corporation"
BoardName "GeForce GTX 670"
EndSection

Section "Screen"

# Removed Option "metamodes" "DFP-3: 1920x1080_144 +0+0"
Identifier "Screen0"
Device "Device0"
Monitor "Monitor0"
DefaultDepth 24
Option "Stereo" "0"
Option "nvidiaXineramaInfoOrder" "DFP-3"
Option "metamodes" "DFP-3: 1920x1080_120 +0+0; DFP-3: 1920x1080_144 +0+0"
SubSection "Display"
Depth 24
EndSubSection
EndSection

[Perfect Storm]

Moved to Hardware.

[CatKiller]

The VertRefresh range that you've specified in your xorg.conf does not include 120 Hz.

[ponask]

Well yes? Maybe your looking at my tv thats also connected to my computer, but further down it says 120 hz and 144 hz.

"Section "Screen"

# Removed Option "metamodes" "DFP-3: 1920x1080_144 +0+0"
Identifier "Screen0"
Device "Device0"
Monitor "Monitor0"
DefaultDepth 24
Option "Stereo" "0"
Option "nvidiaXineramaInfoOrder" "DFP-3"
Option "metamodes" "DFP-3: 1920x1080_120 +0+0; DFP-3: 1920x1080_144 +0+0"
SubSection "Display"
Depth 24
EndSubSection
EndSection"