How to fix 0.2s screen freezes in World War Z: Aftermath during exploration?

While speeding across the vast planetary surface, the screen would freeze for about 0.2 seconds, which is lethal in fast-paced combat. I initially tried closing all background software, but releasing 2GB of RAM was useless against the massive resource loading, leaving me feeling powerless. I used the GamePP Resource Scheduler to set the memory page allocation to Priority mode and lowered the compression service priority. RTSS showed frame times converging to 12-20ms, AIDA64 confirmed CPU utilization at 65-72%, and CPU-Z measured bandwidth at 88-94%.