The simplest test would be to use any two 120hz displays.
I sold my VG236H last August, the best I can do is a CRT test. TBH I don't see any point since enough experienced people (Vega, PC Monitors, Playerwares [BenQ XL2411T], Mark) have all tested/stated that the Asus (and BenQ) has low lag and all of Asus's other 120-144hz displays low input lag. The VG278HE's 1 frame of lag @60hz is the only anomaly.
If it were a new Samsung model which they advertised as having low lag this would matter more.
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