Why is my Fanxiang S910Max 1TB PCIe 5.0 dropping speed and freezing the screen in Once Human?

While exploring dense city clusters in Once Human, I noticed the Fanxiang S910Max 1TB PCIe 5.0 had massive read speed swings around 10GB/s, causing these annoying 0.5-second hard stutters. I started by disabling Fast Startup in Windows, but that did absolutely nothing for the PCIe 5.0 scheduling—it was a complete waste of time and honestly pretty frustrating. I eventually dove into the BIOS and switched the PCIe Link State Power Management from L1 to Disabled and forced High Performance mode. Checking HWiNFO, the SSD core temps hovered between 62℃ - 68℃, and random 4K read latency finally tightened up from 12-25ms down to 8-11ms. I actually hit a wall when I tried messing with the registry for write caching; the system crashed twice until I rolled the write-combining parameters back to default. With the heatsink surface staying at 45-52℃ and fans humming at 1200-1500 RPM, five rounds of CrystalDiskMark confirmed the read/write curves are finally smooth. It's rock steady now.