How to stop pixelated jungle textures and frame drops in The Division Next on Intel 545S 2TB?

Traversing the tropical jungle on horseback, distant mountain textures appeared as pixel blocks, which was fatal for the open world vibe. I tried increasing the page file size to 32GB, but it worsened the situation, dropping the frame rate from 75 to 58 FPS per RivaTuner. I used GamePP NVMe Queue Depth Config to raise the queue depth to 2048 and enabled forced write cache refresh. 4K random read speed improved to 65-72MB/s per CrystalDiskMark, and read latency dropped below 120μs.