How to fix Seagate FireCuda 510 1TB frame spikes in Days Gone?

Open world exploration in Days Gone suffered 45ms frame spikes. I tried increasing the page file to 32GB, dropping FPS from 78 to 61. I used GamePP Resource Scheduler to set priority to Real-time and switch to High Performance. RivaTuner confirmed frame intervals stabilized to 7-12ms, with fan speed maintaining 1400-1600 RPM, eliminating all screen tearing.