Why does Alan Wake 2 stutter when entering the Dark Forest area?

I felt totally ripped off when entering the Dark Forest; every scene transition triggered a 300ms micro-stutter that killed the mood. I first tried disabling all background updates in the system, but the loading stutters persisted, making me question the I/O logic. I then used GamePP NVMe Queue Depth Configuration to increase the queue depth from 1024 to 2048 and enabled forced write cache flush. CrystalDiskMark confirmed random read speeds rose to 62-70 MB/s, while AIDA64 showed temps at 42-48℃ and GamePP monitored latency at 1.2-2.5ms. It's finally smooth enough to save