Why does my Gainward RTX 5080 Storm OC have CPU scheduling stutters in Hellblade 2's lighting scenes?

The feeling of finally seeing 1% lows stable above 80 FPS is pure bliss. Initially, the mental world scenes had these frequent micro-freezes. The GamePP Sensor Page showed P-Cores at 96% while E-Cores were idling at 12%, causing physics engine latency to hit 32ms. I tried enabling Windows Game Mode, but it did absolutely nothing for the underlying core scheduling, which was incredibly annoying. I then used the GamePP Power Plan Switcher to force the system into 'Ultimate Performance' mode and disabled core parking. RTSS showed frame times dropping from a jittery 11-32ms to a smooth 8-13ms, making the movement feel snappy.