How to fix texture blurring during army battles with WD Black SN770?

Commanding large legions was ruined by textures taking seconds to sharpen, which felt incredibly jarring. I tried lowering texture quality in-game; while FPS increased by 8, the loading delay remained, and RivaTuner showed bus latency at 12-20ms. I used the GamePP Peripheral Driver Conflict Detection Tool to disable a legacy disk manager hogging I/O. RivaTuner then showed frame times converged to 11-16ms, and AIDA64 confirmed the drive temperatures stabilized at 52-58℃.