Your monitor is basically IDENTICAL to my XL2720z now, except you are at 2560x1440 and I'm at 1920x1080, and your max vertical total is 1825/1849. Mine is 1502.
Mine goes "out of range" at VT 1503, while yours probably drops the custom resolution and reverts to default timings because the VT exceeds the specification far too much.
I would order this monitor RIGHT NOW, but the 60hz and 85hz strobe tests with and WITHOUT the VT 1825 tweak are ESSENTIAL for me, because that's a deal breaker.
That's why I'm so persistent. if im going to blow $700 on a monitor I need to know if it can single strobe
Guys remember if you own this monitor, please.
Test 60hz blur reduction, with DEFAULT timings first. in Test UFO/alien invasion. It should have a DOUBLE image--that's double strobe. double strobe is bad
And if you have time test 85hz (Automatic timings) also; 85hz needs to be entered as a custom res/refresh.
Then change the vertical total at 60hz to whatever works. 1825 or lower vertical total. Check if it starts single strobing. the CLEAR giveaway is you will get a LOT of flickering, but testUFO should now be MUCH better--NO double image at all. THEN try changing AREA and INTENSITY in the service menu.
If they have NO EFFECT at 60hz and at 85hz with vertical total 1825 (or a lower VT at 60hz), then that's a deal breaker--can't buy the monitor
If changing area and intensity DO work at 60hz and 85hz with a high vertical total--then the monitor is worth buying.
Unfortunately for console games who are using 60hz, you can't use VT tweaks on consoles