How to stop texture flickering with WD SN770 in WWZ?

I felt extreme anxiety seeing distant textures flicker and experiencing 0.1s stutters while traversing the map. I tried enabling write combining in the driver, but it didn't stop the flickering and actually caused two system freezes during game saves, which was deeply discouraging. I used GamePP NVMe Queue Depth Configuration to increase queue depth from 32 to 64 and enabled high-throughput mode. Now, random reads improved to 62-68MB/s per CrystalDiskMark, response times dropped from 15-120ms via AIDA64, and temps are 45-52℃ per HWiNFO.