Why is Judgment lagging when disk occupancy is over 80%?

Walking through Kamurocho was maddening; the loading was painfully slow once my disk hit 80% occupancy. I initially tried enabling Storage Sense for cleanup, but the background scanning actually caused more micro-stutters. I then used the GamePP Resource Scheduler to set the game's disk I/O priority to Highest and switched to the High Performance power plan. RivaTuner showed frame time fluctuations dropped to 20-30ms, and AIDA64 confirmed temps at 38-46℃. It's finally playable.