Thanks, Brook

Just pay attention to Masterotaku's posts about "strobe crosstalk" and remember to test the "ALIEN INVASION" test on TestuFO.
Press F11 for full screen on internet explorer, go to THIS website:
http://www.testufo.com/photo#photo=alie ... 0&height=0
Set the height to "full screen" then press F11.
What you are looking for are extreme differences in ghosting 'double image' artifacts at the top, middle and bottom of the screen.
The EXACT thing you need to pay attention to is the RED vertical bar in each UFO rectangle.
What you should notice is, and this assumes on how you adjust the "AREA" setting in the blur reduction option in the OSD, a "thick" copy of the red vertical bar, that actually becomes the NEW red bar, either one frame ahead or behind the existsing old one.
This may occur at the top or bottom of the screen.
if you see one continuous red bar from the very top to bottom of the screen, WITHOUT a 'new' red bar--that starts OFF Being a thick ghosted black bar being created (strobe pulse, basically) either in FRONT of the image (usually at the top) or BEHIND the image (usually at the bottom), then this is GOOD for us, and exactly what we want. What we do NOT want, is to have a HUGE blurry mess at the top or (usually) the bottom of the image. This "blurry mess" is exactly where that vertical red line stops being red, actually, and starts turning black in TWO locations (the strobe crosstalk) and then a 'new' red line is created as you move up or down the screen. (It is THIS artifact that is usually FIXED by using a VT tweak. But this usually applied to the Z series and 2430T. We do not know how the XL2730Z reacts to this or even if it needs it or not).
What we ask you to do is to test this WITH your VT tweak (try to find out where the VT tweaks stop working and you go "out of range" but that might take a long time---and NEVER use a VT tweak for the current resolution you're testing...e.g. if you want to test 100hz VT tweak, set the display to 60hz first), and then test the same ghosting without a VT tweak, and see if there are any differences.
I can't find the static (camera captured) images of what a 'default', VT 1500 or VT 1350 Z series monitor looks like for the ghosting and strobing artifacts, or I could link you so you would know what you are looking for. I can only hope my explanation is good enough
Check DVI mode also if possible (might need 100 hz as someone said 144 hz won't work in DVI at 1440p mode).