I have pretty much the same system. Look in my sig for my current drivers. Plus look here http://www.asusrog.com/forums/showthread.php?5126-Any-Kind-of-Lag-and-Atheros-WiFi-Card

BTW uninstall ASUS live update. It's useless.

JRd1st wrote:
There's another new Atheros WiFi driver - 9.2.1.459 Don't know what's different but if someone wants to try it let us know how well it works. 😄

And as JRd1st usually points out, updating the stock Atheros Wireless Adapter driver is one of the most critical updates. The stock driver is responsible for more issues than you would believe because of its high DPC Latency.

I also recommend configuring Windows Update to let you choose which updates to download and install. Microsoft updates can occasionally cause problems on some systems, even if they don't encounter problems on installation. If Windows Update installs them automatically, you may never know what change caused the problem on your system.

I typically install the Security updates immediately, but read the KB articles to determine if I'm experiencing the issues other critical updates are supposed to fix. If I haven't observed those issues, then I don't install the update. Knowing when you installed Microsoft updates can make it easier to restore your system to an earlier time.

Doesn't matter what order you do updates, but if you do a clean install you have to install the Chipset drivers first, after you install windows.

You don't sound ready to do a clean install. Familiarize yourself with everything, then do some research. 😉

Here's a start with your research.

Here is a useful guide of ASUS pre-installed applications: http://forum.notebookreview.com/asus/380681-asus-utility-bloatware-guide.html
It can help you determine which apps you want to uninstall.