Calibrate Memory Voltage
It felt like my mouse was sliding through mud; I'd click to fire, but the bullet left the gun milliseconds later. I first tried updating the motherboard BIOS, but it didn't fix the lag and actually broke my XMP profile. I used the GamePP BIOS Load-Line Voltage Wizard to tune memory voltage to 1.38V via HWiNFO64 and set LL Load-Line to L2 mode. InputLag Monitor showed latency dropped from 18ms to 11-13ms, and CPU-Z confirmed a stable 6400MHz frequency.
