Why does Crimson Desert stutter when saving large game archives?

Saving large archives in Crimson Desert caused frustrating stutter on my YMTC TiPlus7100 4TB. The write bottleneck was hitting 12-15ms latency. I tried cleaning junk files first, which freed space but didn't improve speed, making me feel hopeless. I then used GamePP NVMe Queue Depth Config to raise the queue depth to 2048 and enable forced write cache refresh. CrystalDiskMark showed sequential write speeds increasing from 4800MB/s to 5200MB/s. HWiNFO64 confirmed stable temperatures at 45-50℃, and the save process became instant and reliable.