Why does Tekken 8 stutter during critical attack frames?

It's infuriating; fighting games can't tolerate frame drops, yet my screen would stutter exactly when I launched an attack. I initially tried enabling Power Saving mode in Windows to reduce heat, but my FPS dropped below 30, which was a completely wrong move. I used the GamePP Fan Curve Configuration Panel to force the fan speed to 100% at 70℃ and switched to the High Performance power plan. Now, frame generation time is a smooth 11-14ms per RTSS, and HWMonitor shows CPU temps at 65-72℃ with a 3.2GHz to 4.8GHz boost per CPU-Z.