Why does my CPU temp spike over 90C and trigger throttling in dense city areas of MSFS 2024?

While flying low over central London, my core temps shot from 62C to 94C in just three minutes, tanking my FPS from 65 down to a stuttery 22. It was a total nightmare. The default fan curve on the Thermalright PA120 V3 is way too conservative below 75C, letting heat build up before the heat pipes can even move it to the fins. I tried pinning the fans to 100%, but the resonance noise was audible even through my headset—completely unusable. I eventually dove into the BIOS and slashed the fan start delay from 0.7s to 0.1s, while applying a -0.05V offset to the CPU cores. Checking HWMonitor, the temp swings tightened from 68-94C to a steady 72-81C, and the frame times finally smoothed out. I actually hit two boot loops during the first voltage tweak until I bumped the offset back up by 0.01V for stability. Now the fans hover around 1200-1500 RPM with exhaust temps between 42-48C. Stress tests confirm the heat transfer curve is back to normal, with frame generation times locked in at 5.1-6.4ms.