How to fix 0.5s freezes during combat in God of War Ragnarök?

I was getting killed constantly because the screen would freeze for half a second during heavy physics collisions. I tried enabling 'Ultimate Performance' in Windows, but the scheduling conflict between P-Cores and E-Cores remained. I used the GamePP Resource Scheduler to lock the physics engine to Realtime priority and restricted affinity to P-Cores only. Frame time converged to 11-16ms per FrameView, with CPU temps at 68-75℃ per AIDA64 and fans at 2100RPM.