My Ryzen 7 9700X keeps jumping frequencies during heavy skill casts in Code: Jie, causing this weird visual tearing. How do I fix this lag?

I was smashing my keyboard, but the action on screen was skipping frames, creating this disjointed feeling that completely ruins the competitive edge. Checking the performance overlay, the single-core clock on my AMD Ryzen 7 9700X was bouncing wildly between 4.2GHz and 5.3GHz, sending the frame time oscillating between 11ms - 26ms. I tried toggling Windows Game Mode, but that software tweak felt like putting a band-aid on a bullet wound; the FPS was still swinging by 20 frames, which was incredibly frustrating. I eventually dove into the BIOS, enabled PBO Enhanced Mode, and set the Curve Optimizer to a negative 20 offset to keep the clocks high while dropping the voltage. During an AIDA64 FPU blast, temps hovered between 72℃ - 78℃ with voltage holding steady at 1.15V - 1.21V. I actually pushed it to negative 30 at first, but the system black-screened and rebooted three times during the loading screen before I backed it off to negative 20. Once I did, the RTSS frame time graph went from a jagged mess to a flat line. After three hours of intense raiding, my memory temps stayed between 58℃ - 63℃. It's finally playable without that sickening jitter.