Does the Noctua NH-D15 G2 cause clock speed fluctuations in Granblue Fantasy Relink during raids?

This was insane—during full-screen ultimate attacks, my CPU was bouncing between 3.8GHz and 4.5GHz, making the game look like a slideshow. Even with the top-tier Noctua NH-D15 G2 chromax.black, the core temps were hovering around 82-88℃, triggering constant frequency shifts. I tried a blind overclock in the BIOS first, but it hit 98℃ and the whole system shut down, which gave me a real heart attack. I switched to an undervolt strategy, setting the offset to -0.06V and using a stepped fan curve. Using RTSS, I saw my frame times shrink from a messy 14-24ms down to a tight 9-12ms. I did hit a wall where -0.06V was unstable and caused a BSOD, so I settled at -0.05V for the perfect balance. Now temps stay between 67-73℃ and there's zero pressure on the cooler. Exported logs show frame times are now consistently between 5.1-6.4ms.