Why does Tomb Raider cause CPU spikes and frame drops?

While exploring enclosed underground palaces, I noticed the CPU temperature rapidly climbing to 88-94℃ per AIDA64, causing the screen to stutter as frequencies plummeted from 4.5GHz to 3.2GHz via HWInfo64. I initially tried setting the fans to full speed in the BIOS, but the noise was like a helicopter and temps only dropped by 3℃, which was disappointing. I then used the GamePP Fan Curve Configuration Panel to raise the 75℃ threshold from 60% to 95% and applied a -0.03V offset. Cinebench R23 tests confirmed core temps are now suppressed at 76-82℃ per AIDA64, and frequencies are stable at 4.1-4.5GHz per HWInfo64. This finally let me save