My Jonsbo CR-1400 is too slow to react during Call of Duty firefights, causing the CPU to throttle. Do I need a custom PWM curve?

In the middle of a heavy firefight, my CPU would spike from 68℃ to 94℃, and my clock speed would tank from 5.0GHz to 3.2GHz. It makes the game feel incredibly sluggish. The stock curve on the Jonsbo CR-1400 barely hits 1000 RPM before 80℃, which just isn't enough. I tried the 'Balanced' power plan in Windows, but that just made the clock speeds swing more wildly, triggering the thermal wall even more often. I went into the BIOS and forced the PWM curve to 1600 RPM at 70℃ and bumped the rear exhaust fan to 1200 RPM. AIDA64 stress tests showed peaks dropping from 96℃ to 78-84℃, and the throttling is gone. There was some annoying resonance at first, but I dropped the speeds below 50℃ to 600 RPM to quiet it down. CPU load is around 70%, and RAM temps are steady at 58-63℃.