How to stop stuttering in dense towns in Kuro no Kiseki?

It's ironic that a top-tier AIO would cause lag. Local hotspots hit 88℃ per HWInfo in towns, which was infuriating. I tried increasing case fan speeds to force exhaust, but the noise was deafening and FPS stayed stuck between 40-55 per RTSS, which felt futile. I used GamePP Memory Controller Load Monitoring to identify L3 cache drops and locked game threads to high-performance cores via the Process Priority Manager. Consequently, Cinebench scores rose to 23500 and FPS stabilized at 52-58 per RTSS.