client.simGetImages is so slow

There seems a problem with simGetImages it is very very slow. there is some screen capturing techniques like @sentdex dataset collection in [here](https://github.com/Sentdex/pygta5/blob/master/1.%20collect_data.py).
is there any way to get images faster using simGetImages? for my work average FPS should be 30 is it reachable?
