My PCcooler RT620 can't seem to handle Naraka's chaos, leading to frequency jitter. Can I fix this via priority?

Man, this cooler looks like a beast on paper, but it still struggled with this game's messy optimization. My frame rate looked like an EKG monitor. The RT620 ARGB has plenty of surface area, but it couldn't move heat fast enough during sudden boost peaks, causing clocks to bounce between 3.5GHz and 4.8GHz. I tried 'Ultimate Performance' mode in Windows, but that just made the fans louder without fixing a single drop—a total waste of time. I went into the BIOS, dropped the fan trigger from 65°C to 50°C, and locked the CPU core voltage at 1.22V to kill the fluctuations. Monitoring via RTSS showed frame times converging from a wild 18-38ms to a stable 12-16ms. I had a brief boot failure when I first locked the voltage, but adding 0.03V sorted it out. Temps now sit at 70°C - 76°C, and my exported logs show frame times finally settling between 5.1-6.4ms.