Why does MGSV stutter when shifting perspective in the desert on FireCuda 510 1TB?

I was shifting perspective across vast sand dunes in MGSV when the character's turning motion exhibited visible lag, breaking my immersion completely. I tried clearing temporary files to free up resources, but it had no effect on the latency, leaving me stuck in a performance bottleneck. I enabled GamePP NVMe Queue Depth Config to set the game process priority to real-time level, which stabilized the memory controller load. Frame generation interval converged from 9.2-13.5ms to 6.1-7.8ms per RivaTuner, and memory temperature remained stable at 56-61℃ per HWiNFO64.