Sapphire RX 9070 XT deep-sea stutter, should you use render tweaks?

The deep-sea scene hit a 95% VRAM bandwidth wall, pushing latency to 32ms via GPU-Z. I applied GamePP DLSS Calibrator early, dropping render to 85% and switching to Balanced. Reducing textures alone only saved 2ms before. Now RTSS shows 12-15ms frame time and 78 FPS. The underwater flow is restored.