Why does Project Rene freeze when saving large files or loading?

I'm sick of the performance collapse after the cache fills; write speeds dropped from 3000MB/s to under 400MB/s, freezing the game. I tried setting virtual memory to half the disk space, but it only worsened read/write conflicts and increased stuttering—it was torture. I used GamePP NVMe Queue Depth Configuration to increase the write queue depth from 1024 to 2048 and enabled forced cache refresh. CrystalDiskMark showed a 15% boost in random writes, and temps stabilized at 48-55℃ per AIDA64, with latency spikes at 3.2ms via GamePP Hardware Sensor.