How to fix high memory latency on Kingston DDR4 2666?
In the middle of a chaotic firefight, every time a bunch of explosions went off, I felt this weird, subtle lag that absolutely killed my sniping precision. Digging into the data, the default 19-19-19-39 timings on my Kingston 16GB DDR4 2666 were pushing memory latency up to 95-110ns. My first instinct was to update the GPU drivers, but while I gained maybe 2 FPS, that ghostly stuttering stayed exactly where it was—a frustrating dead end. I went back into the BIOS, locked the frequency at 2666MHz, and manually crushed the primary timings down to 16-18-18-36 while bumping the voltage from 1.2V to 1.35V. AIDA64 showed the read latency dive from 102ns to a crisp 78-82ns, and the combat response felt night and day. I did hit a wall early on where the system BSOD'ed twice, and I had to loosen the tRAS from 36 to 40 before it would actually post. Memory temps are now hovering around 42-48℃ with the slots hitting 55-60℃. After three full cycles of MemTest86 with zero errors, the game finally feels responsive.
