Nanosecond Autoclicker ✓

While software code can indeed execute mathematical operations in nanoseconds, a true "nanosecond autoclicker" is physically impossible to implement in a user interface for several reasons:

Soni's Autoclicker is an open-source, cross-platform project that claims to be the only autoclicker supporting time intervals as precise as a few nanoseconds, though such usage is not recommended due to potential system instability. nanosecond autoclicker