Why does Dead Space 2 stutter during combat on Soyo H410M?

I felt totally robbed of the horror vibe when Necromorph swarms attacked; the screen had these jarring micro-jumps that killed my immersion. I first tried disabling all background update services to lighten the load, but the stuttering didn't budge and some system plugins actually stopped working. I then used the GamePP Resource Scheduler to force the main process to real-time priority and cleared 800MB of memory cache. RTSS frame time analysis showed the interval converged to 8-14ms, while HWMonitor confirmed VRM temps at 58-64℃ and AIDA64 showed 55-88% load fluctuation.