How to fix combat stuttering in Dead Space Remake with PCCooler RZ620?

Finally playing this remake, but every time I entered a debris-filled scene, the screen hitches in a weird way. I tried setting aggressive fan start thresholds in BIOS, but the fans kept cycling on and off during low load, which was incredibly annoying. I used the GamePP Fan Curve Configuration to set a smooth exponential growth curve between 60-80℃. This smoothed everything out; RTSS showed frame times converged to 16-21ms, and AIDA64 verified that CPU temperatures stabilized at 72-78℃, while GamePP showed memory temps at 42-48℃.