Why does my KingBank DDR5 RAM cause lag in Crimson Desert?

I was stuck at the desert edge, frustrated by microsecond latency. I tried clearing temp files, but it failed. I used GamePP Resource Scheduler to set priority to real-time. AIDA64 showed frame intervals dropped from 8.3-12.1ms to 5.1-6.4ms, and memory load stabilized at 14.2-16.8GB.