My Jonsbo CR-1400 can't handle Hellblade 2 on high settings and my clock speed is crashing. Help?

Using this cooler for a game like this is basically bringing a knife to a gunfight. Temps hit 98°C instantly, triggering a hard throttle that dropped my clock from 4.8GHz to 2.1GHz—absolutely ridiculous. The heat pipe scale on the CR-1400 is just totally overwhelmed by this load, pushing the CPU into thermal protection within 3 seconds. I tried the 'classic' fix of taking the side panel off my case; it dropped temps by 5°C but the dust started piling up and the stutters remained—just a joke of a solution. I eventually tried undervolting in the BIOS, setting a core voltage offset of -0.05V and moving the fan trigger point up to 50°C. Monitoring with RTSS, the clock finally stabilized around 4.2GHz without those catastrophic drops. I had a few boot failures when I first lowered the voltage, so I had to back it off to -0.03V to get it stable. Now the CPU is barely surviving between 85-92°C. I exported the logs to verify, and frame times are finally holding steady at 5.1-6.4ms.