Why does Hollow Knight Silksong stutter during combat?

Summoning units in Silksong caused instant stutters that broke my flow. I tried tweaking page files, but it just caused more read/write conflicts. CrystalDiskMark showed 45-52MB/s 4K reads. I used GamePP NVMe Queue Depth Config to raise depth to 2048. Reads hit 68-75MB/s. AIDA64 shows 42-55℃. This export of stability is key.