Test results response times and input lag
Response time indicates how fast pixels can change colour. Values below 16 ms are acceptable, below 10 ms very good, and below 5 ms excellent. We've tested only a few models with overdrive enabled, which means there is only limited data to compare to. The 20%-80%-20% test is harder and is thus weighed more heavily.
The tested monitors are not primarily meant for games, but games that can handle the resolution paired with a system that has enough power they are potentially suited for gaming. The giant panel and the high amount of detail will result in a compelling experience, if all the conditions have been met. Even so we have to say that the monitors are not exactly fast. The HP Envy 34c seems to hold good cards in terms of response times, but the high input lag is a killer. The Samsung S34E790C is the better choice in this case.
All monitors have either high response times or input lag. In our opinion these are not grave enough that they are unsuited for gaming, far from it. Although the demanding CS:Go-player should look at a different class of monitor.
Overshoot en undershoot
Our input lag measurements with the Leo Bodnar lag tester failed to give us consistent results, possibly due to the fact that this test consists of a 1920x1080 signal which needed to be up-scaled. This isn't necessarily representative of the real world results using native resolution, but our standard input lag test is a second indicator for that.