How do I handle random FPS drops during dimension jumps in Ratchet & Clank with a Cooler Master ML360 SUB-ZERO?

During high-frequency rift jumps, the screen would have a tiny twitch, which was very obvious at 4K. I carefully opened the GamePP Hardware Sensor Page and found the Cooler Master ML360 SUB-ZERO core temps hitting 76-82℃ (AIDA64 monitoring); while not at the limit, the clock was already fluctuating. I first tried lowering shadow quality in-game, but the drops persisted, proving it was a CPU thermal management issue rather than a GPU bottleneck; this trial made me sure of the direction. Then I entered the GamePP Fan Curve Config Panel and bumped the 80℃ fan speed from 70% to 90%. In RTSS frame time analysis, the time converged from 7-14ms to 7-10ms (RTSS monitoring), and the drops vanished.