I mentioned this in the 4.2.1 post but just in case it's missed...
After updating to 4.2 I noticed that while playing I hear the sound indicating that my usb cable for my game controller has disconnected. I'll hear the sound again but my controls become uncalibrated and I have to disconnect and reconnect the usb to fix it. A few minutes later it happens again.
I heard 4.2.1 doesn't fix this bug. I grew up playing with a controller so I can't play with a keyboard. I actually use a mouse for aiming and shooting and a controller for moving around and other stuff. I recommend trying it cuz it's awesome. I get the aiming precision pc gamers prefer with a mouse and the fast turning speed that the controller provides.
Anyways, any feedback would be great.