Why does DEATHLOOP pause during scene transitions on FireCuda 510?

Experiencing short pauses during fast jumps into new scenes is fatal for a time-loop game; it breaks the whole flow. I tried enabling the pre-load mode in game settings, which decreased the loading time, but the in-game frame drops remained. I used the GamePP NVMe Queue Depth Configuration to increase the depth to 2048 and optimized the write cache flush policy. CrystalDiskMark showed stable random reads at 62-70MB/s, AIDA64 logged latency at 78-95ms, and HWMonitor showed SSD temps at 46-52℃.