Well, I think i solved my issue..

Decided to try my wife's azeron on my computer.

Being lazy, I didn't wanna unplug the whole thing from the computer ( USB-A end ). So I unplugged the mini usb instead.
Plugged in hers .. and no issue. then swapped back to mine ... no issue.

As for WHY unplugging the mini usb would've solved the problem ? NO IDEA.. well some idea .. maybe a dust spec introduced a little resistance in the datalines or something which would affect how the device polling would send interrupts to the cpu while ff14 is running or something.

Lesson learned be lazy and solve your issues by sheer luck.