Hi OC,
I must mention that I have a friend who also has the same notebook, and does not experience this dropped key issue. I have done a lot of testing, and the issue is definitely not the result of keyboard roll-off.
How fast is considered to be "too fast" for this keyboard? I average around 60 WPM, which is above average, but I feel it is completely acceptable as a normal speed.
Again, I had spoken with Brian at Intel Lanfest, and again this past weekend at PDXLAN 16 in Portland regarding this issue.
Also, there has been a user who reported that cleaning the flex cable contacts on the keyboard ribbon cable also helped eliminate the issue. I will give your notebook department a call regarding this as well. I just feel for such an expensive laptop, a bit more action on Asus's part would be in order, considering this is considered an ROG product, and should be of the highest quality. No one can seem to give me a definite answer.