My computer was originally a Windows 7 machine which I upgraded to Windows 8 Enterprise. I installed the drivers from the Asus site. Now that my favorite 1st person shooter runs under Windows 8, I've been playing quite a bit lately. But after playing a while, the cursor starts moving in game like I am pressing the W-key when I'm not. I can get it to stop immediately by hitting the escape-key and it will stop for awhile,but it will start again.

Any ideas?