Why does Expeditions: Rome crash FPS with Jonsbo CR-1000MAX?

I was devastated when my frame rate plummeted from 80 to 45 FPS during legion charges. My CPU hit 88-92℃, triggering heavy throttling. I first tried full speed fan mode in BIOS, but the noise sounded like a helicopter taking off, which was totally unacceptable. I switched to the GamePP Fan Curve Configuration Panel to set an aggressive stepped curve for 70-85℃ and added a 5℃ hysteresis interval. The results are night and day: CPU temps stabilized at 76-82℃ per RTSS, and 3DMark stress tests confirmed a steady 78-81℃. Finally, the stuttering is gone.