Read multiple ultrasonic sensor by firefly, but it reads so slow

I am modifying the script from J Frölich's, The only code I understand is python. So I did this by simply copy paste the ping setup. 

http://www.grasshopper3d.com/forum/topics/using-ultrasonic-ping-sen...

So I get ping2,4,7 to work at the same time. But the problem is that they read really slow. It takes 2 seconds to update the data. 

Also, in that script, I am trying to add 3,12,13 too. But those pings are not in firefly uno read. 

Any suggestions will be great!

Thanks!

And here is my modified script.