Warning: hardware-level nanosecond timing and automated clicking can violate software terms of service, break systems, or damage hardware. Use only for legal, ethical testing on systems you own or have permission to test.
Even if your software tells the CPU, "Register a click at T=0 and another at T=1 nanosecond," the electrical signal traveling down your USB cable has latency. A typical USB poll rate is 1000Hz (1ms). High-end "overclocked" mice can poll at 8000Hz (0.125ms). nanosecond autoclicker work
Final advice: If you see a tool advertising "nanosecond autoclicker work," treat it with extreme skepticism. For 99.9% of users, a reliable 1 ms autoclicker will perform identically in games, save your CPU from melting, and keep your system malware-free. USB Polling Rate: Most gaming mice poll at