BioShock 4 keeps stuttering during scene transitions. Is this a cache issue or virtual memory?

Every time I entered a new underwater zone, the loading bar would just hang at 99% for several seconds, which was incredibly anxiety-inducing. The SLC cache on the Zhitai TiPro9000 4TB gets choked by temporary files, causing random read speeds to plummet from 7000MB/s to around 1200MB/s. I tried disabling all background updates in Windows, but that only shaved off a second—a pathetic result that felt like a band-aid on a bullet wound. I eventually installed the latest NVMe controller drivers and changed the write caching policy to 'Force Flush' in Device Manager. CrystalDiskMark showed 4K random reads climbing from 55-62MB/s to 78-85MB/s, and those transition stutters are gone. I actually hit a random BSOD right after the first policy change, but switching my power plan from 'Balanced' to 'High Performance' fixed the stability. Drive temps are sitting between 42-56℃ with the stock heatsink. The I/O wait times have shrunk significantly, and the game finally feels responsive to my inputs.