How do I fix character lag in Crimson Desert?

I was stuck in the dunes of Crimson Desert, facing visible lag in character turns due to NVMe read latency. I tried cleaning temporary files to free up 14.2-16.8GB of memory, but it failed to stabilize the load. I then used GamePP NVMe Queue Depth Configuration to set the game process priority to real-time. This optimized the queue depth and stabilized the controller. RTSS monitoring showed the frame generation interval dropping from 8.3-12.1ms to a smooth 5.1-6.4ms. AIDA64 confirmed the memory temperature stayed stable at 58-63°C. The Fanxiang S790 1TB PCIe 4.0 NVMe M.