Mechanical switches rock, but chatter sucks. And the only way around it if a deep clean doesn't work is an RMA. RMA sucks.
CUE could use a user-configurable feature (in milliseconds) that ignores repeated keystrokes below that threshold.
This needs to be at the driver level so's it'll work across the board: games, desktop apps, the whole lot.
TBH I don't know why Corsair didn't think of this themselves. It would save them a fortunate in chatter-related RMAs.