General :: Samsung Galaxy S3 - Slow Input Tap From Script

I own a Samsung Galaxy S3 and am trying to write a shell script that will simulate screen presses in a very rapid fashion. To do so, I stumbled across the "input tap" function from /system/bin/input and my script looks like this:

Code:
x=1
while [ $x -lt 10 ]
do
input tap 640 110
(( x++ ))
done

Anyway, the code works great in that it will tap the screen at location 640,100. However, each call to "input tap" takes almost a second to return. My script takes around 10 seconds to complete. However, I was hoping to find a way to speed up the call to "input tap". I am not sure if this is a limitation of my phone.