Why does Far Cry 6 stutter during large explosions in the jungle?

While exploring the deep jungle, every large explosion triggered a noticeable stutter that ruined the open-world vibe. I tried lowering shadow quality in the settings, but the frame drops persisted because the bottleneck was storage, not GPU. I enabled the GamePP Resource Scheduler, bumped the game's I/O priority to high, and limited background scanning software. RTSS verified frame generation intervals converged from 18-42ms to 14-19ms. HWMonitor showed drive temps at 44-52℃, and GamePP monitoring showed disk active time at 95-100%.