Why does Hitman 3 stutter in scenes with many NPCs?

I was surprised! The slight twitching in stealth missions was ruining the immersion. I first tried enabling Extreme Performance mode in BIOS; frequency increased, but scheduling latency still fluctuated between 12-18ms per AIDA64. I then raised the game process priority to Realtime and used the GamePP Resource Scheduler to suspend all redundant background processes. Frame time stabilized at 16-20ms per RTSS, FPS stayed at 60 via RTSS, and CPU temperature maintained 62-68℃ per HWMonitor.