Why does Phantom Blade Zero stutter during fast combos?

I felt pure desperation when fast combos triggered sudden stutters, ruining my immersion and making precise parrying impossible. I tried manually expanding virtual memory to 16GB in system settings, but it didn't stop the micro-stutters and actually increased disk I/O pressure, extending load times by 5s. I then used the GamePP Resource Scheduler to set the game process priority to Realtime and killed background apps. RTSS monitoring showed frame times converged from 16-42ms to 14-18ms, while AIDA64 showed 200-500MB available memory and HWMonitor confirmed temps at 42-48℃.