Latency And Overshoot
Latency
I have the same criticism of the Benq as with many other monitors I've seen. The display is far from equivalent to a 5 ms monitor in standard format. It's really flagrant, as you can see here.
The worst reading was 25 ms, and the average was around 22 ms. That's nothing to brag about.
Overshoot
Since there's practically no Overdrive used, there was no danger of its being excessive. I give it a rating of A in that department.