How do I deal with stuttering during scene transitions in Far Cry 7 on a Jginyue X99 TITANIUM?

This board is basically gasping for air when dealing with the massive textures in modern games; every time I enter a new area, there's this obnoxious stutter that makes me want to throw my monitor. The PCIe lanes on the Jginyue X99 TITANIUM were hitting 18-28ms of scheduling latency during heavy NVMe reads, leaving the CPU spinning its wheels. I tried lowering the graphics settings, but the game looked like a blurry mess from the 90s, which was just pathetic. I went into the BIOS, forced the PCIe speed to Gen3 instead of Auto, and killed every single redundant background sync service in Windows. In CrystalDiskMark, random reads improved from 35-40MB/s to 42-48MB/s, and the loading hitches dropped by about 25%. After forcing Gen3, some of my older USB peripherals stopped working, but a simple unplug-and-replug fixed the handshake. The chipset temperature is now stable at 52-58℃ with response times around 0.06ms. I used a backup tool to export these BIOS settings so I don't have to do this again. The board stays at 52-58℃, but it's still a struggle for the hardware to keep up.