How do I stop CPU frequency fluctuation causing frame jitter in Indiana Jones and the Great Circle?

Traversing the ruins felt like a chore because of constant screen stuttering. I attempted manual overclocking, but it triggered a blue screen, which was a stressful and unstable experience. GamePP showed the CPU bouncing between 4.0-4.5GHz in Balanced mode. I used GamePP Power Plan Switcher to move to High Performance and locked the minimum core count. Cinebench confirmed the frequency stabilized at 5.2-5.4GHz. In-game FPS jumped from 75 to 95. This precise set of adjustments finally restored smooth transitions.