How to fix combat stuttering in Sword and Fairy 7 with NVMe?

Summoning units caused painful stuttering. I tried adjusting virtual memory, but it made I/O conflicts worse. I used GamePP NVMe Queue Depth Config to raise depth to 2048. CrystalDiskMark showed 4K random reads improved to 68-75MB/s. Scene loading dropped from 12s to 5s. Combat is finally smooth and responsive.