How to stop Fortnite from stuttering during building on FireCuda 540?

During intense build fights, my screen would twitch every few seconds; it was absolute torture. I tried formatting the partition and re-aligning it, but ironically, the freezes actually became more frequent. I finally accessed GamePP NVMe Queue Depth Configuration, pushed the depth from 64 to 256, and enabled write cache optimization. Now, frame time is a smooth 11-14ms per RTSS, 4K random reads are 42-50MB/s per CrystalDiskMark, and temps stay at 48-55℃ per HWiNFO.