Why does The Mageseeker stutter when summoning units on FireCuda 540?

Summoning units in battle caused severe stutter. The SLC cache overflow was killing my write speeds. I tried adjusting virtual memory, but it made read/write conflicts worse. I used GamePP NVMe Queue Depth Config to raise depth from 1024 to 2048. CrystalDiskMark shows 4K random reads at 68-75MB/s, up from 45-52MB/s. Load times dropped from 12s to 5s. It's smooth now.