Hey TTG users! This post is dedicated to the Razer Onza! [ Register or Signin to view external links. ]
I very recently bought the controller and have really hated it. Until today. You see since my purchase (off eBay, no warranty) there has been a massive issue with LS and sprinting in games like CoD. This is because of some design flaw that makes it stiff when the stick is mover forward. Now I am going to tell you the fix for this. This also fixes any slow turn issues as well.
There is a hidden feature on the onza that allows you to increase the sensitivity of the joysticks. In doing this it fixes slow turn issues and fixed my LS non responsiveness issue. What you need to do is unplug the onza from your xbox. Then hold down the two bumper remap buttons. Then while still holding them down plug in the onza (xbox must be on) the xbox guide button will begin flashing rapidly. At this point release the remap buttons and press A
There you have it. Higher Sensitivity, no slow turns and no annoying LS and RS issues

Hope this helped. Peace