Why does Days Gone stutter during zombie horde combat?

I felt totally defeated when riding through zombie hordes; sudden micro-stutters broke my immersion and felt fatal. I tried enabling Low Latency Mode in the driver panel, but it didn't fix the bandwidth jitter and actually added 3ms of input lag. To solve this, I used the GamePP Resource Scheduler to set the game priority to Realtime and switched to a High Performance power plan. RTSS monitoring showed frame times dropped from 12-45ms to 8-13ms, while GPU-Z confirmed VRAM usage at 11.2-13.5GB and AIDA64 showed temps at 66-72℃. It's finally smooth!