How to fix massive frame drops in Nightingale forests?

It's ridiculous that a drive this fast became a bottleneck; read latency was swinging between 25-55ms. I first tried lowering texture quality in-game, but the visuals became blurry like a game from 2010, which felt like a pathetic compromise. I finally opened the GamePP Resource Scheduling Panel, forced the game's I/O priority to 'Highest', and cleared 8GB of temp cache. RivaTuner curves showed frame generation time converging to 12-18ms from 65ms+, read latency hit 25-55ms per AIDA64, and temps sat 45-58℃ per HWiNFO.