Why does The Last of Us Part II stutter during quick turns?

I felt totally robbed of immersion while sneaking through enemy camps; quick turns felt sluggish, and AIDA64 showed memory latency jumping between 62-75ns. I tried manually expanding Windows virtual memory to 32GB, but it just increased disk page swapping and made the stutters worse. I finally used the GamePP Resource Scheduler to elevate the game process to 'Realtime' priority. RTSS confirmed frame times dropped from 22-40ms to 14-17ms, while HWiNFO showed temps at 52-58℃.