How do I prevent CPU downclocking during GTA V street chases on ASRock B450M-HDV R4.0?

Chasing in Los Santos felt hopeless. Increasing fan airflow only dropped temps by 2℃. I used GamePP Hardware Sensor Page to adjust VCCSA from 1.25V to 1.20V. Cinebench R23 showed VRM temps stabilizing at 75-80℃. GamePP confirmed fan speeds at 1200-1400 RPM, eliminating the thermal bottleneck.