Why are textures pixelated during fast travel in Mass Effect?

Traveling between planets, distant building textures emerged slowly like pixel blocks, creating a lethal sense of lag. I initially tried increasing the page file size to 64GB, but instead of reducing latency, the overall frame rate dropped from 88 to 62 fps via GamePP Sensor. I used GamePP NVMe Queue Depth Configuration to raise the depth from 32 to 128 and optimized the I/O read/write weight. RTSS showed frame time fluctuations converged from 18-120ms to 13-24ms, and AIDA64 confirmed temperature at 42-50℃.