From the TFTCentral HZ27WC review
Same review also shows a measured input lag of only 8.8ms which is very low. The only monitor in the same graph with a significantly lower inputlag is the BenQ XL2410T @ 5.6ms. Just for comparison, the Dell u2711 is 30ms.
The panel itself is rated by LG.Display as having a 14ms ISO response time on paper, but with an overdrive impulse applied, Hazro have rated the screen with a 6ms grey to grey (G2G) response time figure
Same review also shows a measured input lag of only 8.8ms which is very low. The only monitor in the same graph with a significantly lower inputlag is the BenQ XL2410T @ 5.6ms. Just for comparison, the Dell u2711 is 30ms.