Why does my NH-D15 G2 cause CPU clock jumps in Rome?

While deploying my legions in Rome, I noticed my frame rate bouncing between 144 and 110 FPS, which felt incredibly janky. The Noctua NH-D15 G2 should have handled this easily, but HWiNFO showed CPU temps spiking between 55-62℃, triggering the motherboard's aggressive boost behavior. I tried enabling 'Ultimate Performance' in Windows, but that just made the fan noise swing wildly between 40-60 dB—a total nightmare. I eventually dove into the BIOS and manually set the fan curve voltage to a flat 0.7V for anything under 60℃ and bumped the temperature hysteresis (response delay) to 3 seconds. Checking the frame times in RTSS, the variance dropped from 8-15ms down to a steady 6-8ms. I actually messed up at first by setting the delay to 5 seconds, which caused a brief thermal throttle, so 3 seconds is the sweet spot. Now my cores sit at 64-68℃ with fans humming at 1100 RPM. The frequency curve is finally a flat line, and the settings are locked in.
Category:Software Usage Last updated:February 20, 2026 7:48 PM