I'm getting massive random read latency spikes on my TiPro9000 1TB during scene swaps, why?

Whenever I hit the busy streets of Midgar, the screen just freezes for about 0.8 seconds. It's a total nightmare in 4K texture environments. The issue is that once the TiPro9000 1TB dynamic SLC cache fills up after heavy writes, random read speeds tank from 7000 MB/s down to a pathetic 1200 MB/s. I wasted time disabling indexing services in Windows, but read latency stayed stuck between 15 - 30 ms, which was completely pointless. I eventually installed the latest NVMe controller drivers and flipped the Windows write caching policy from default to 'Force Flush' to clear the queue pressure. In CrystalDiskMark 4K random read tests, I saw speeds jump from 55 MB/s to 82 MB/s, and those annoying stutters vanished. I did hit a snag where the system boot felt sluggish at first, but switching the power plan from Balanced to High Performance sorted it out. Temps are sitting steady between 42 - 52℃ with the stock heatsink. I used the storage management tool to lock in these settings.