Why does my GPU throttle during long Dying Light 2 parkour?

High-altitude parkour in Harran City pushed my Manli Star Interstellar RTX 5070 Ti OC to 82-85℃, triggering throttling. I tried maxing out fan speed manually, but the noise was unbearable. That was a bad call. I used GamePP Fan Curve Configuration Panel to raise the 70℃ threshold from 40% to 65%. The temperature dropped to 68-72℃ per GamePP Hardware Sensor Page. Performance stayed stable without the screaming fans. It’s a much better balance now.