What is Rapid Tap and how do I enable or disable it?

Rapid Tap (SOCD) prioritizes the last key press in a selected pair for faster input, enhancing responsiveness for counter-strafing, peeking, crouch jumping, or slide canceling. Toggle it on or off by pressing the SteelSeries Function Key (12) + Q (Rapid Tap Key). The default key pair is A + D, and new pairs can be added via Engine in SteelSeries GG. (Page 5)