There is two very good reviews with oscilloscope measurement:
original (CZ): http://extrahardware.cnews.cz/recenze/asus-pa249q-24-kombinace-led-widegamut-pololeskly-ips-za-539-eur
original (CZ): http://www.svethardware.cz/recenze-asus-pa249q-paradni-24-s-1610/37724
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That is not true. Game mode only reduce inputlag, but responsiveness is same in all modes.;)
Problem is not slow response time, but heavily overdriven pixel transitions (and this makes inversive shadows after moving objects - what you can see in my video).
All three new Ultrasharps (U2413...